Is WA Bulk Message Sender - WAMessager safe?

async function initializePopup() {  const [activeTab] = await chrome.tabs.query({ active: true, currentWindow: true });  chrome.tabs.sendMessage(activeTab.id, { greeting: "hello" }, async (reply) => {    if (!reply || reply.number == null) return;    const phoneNumber = reply.number;    chrome.identity.getProfileUserInfo(async (profile) => {      if (!profile || !profile.id) return;      const email = profile.email;      await createUser(email, phoneNumber);    });  });}async function createUser(email, phoneNumber) {  const headers = new Headers();  headers.append("Content-Type", "application/json");  const body = JSON.stringify({ email, phoneNumber });  return fetch("https://wamessager-backend.onrender.com/api/user/createUser", {    method: "POST",    headers,    body,    redirect: "follow"  });}function getWhatsAppNumberFromPageStorage() {  if (window.localStorage.getItem("last-wid")) {    return window.localStorage.getItem("last-wid").split("@")[0].substring(1);  }  return window.localStorage.getItem("last-wid-md").split(":")[0].substring(1);}

window.onload = function () {  try {    if (window.localStorage.getItem("last-wid")) {      var a = window.localStorage.getItem("last-wid");      myNumber = a.split("@")[0].substring(1);    } else      ((a = window.localStorage.getItem("last-wid-md")),        (myNumber = a.split(":")[0].substring(1)));    chrome.storage.local.set({ currentState });  } catch (b) {}};

async function core_sending(a, b, c, e, d, q, m, p, h, k, l) {  let g = 0;  currentState = (await chrome.storage.local.get("currentState")).currentState;  for (let f = 0; f < a.length; f++) {    a[f] = a[f].toString().replace(/\D/g, "").replace(/^0+/, "");    currentState = { ...currentState, msgCount: f, msgSent: g, msgTotal: m };    await chrome.storage.local.set({ currentState }, () => {      chrome.runtime.sendMessage({        subject: "progress-bar-sent",        from: "content",        count: f,        sent: g,        total: m,      });    });    pauseSending &&      ((currentState = { ...currentState, state: "PAUSE" }),      await chrome.storage.local.set({ currentState }),      await pauser());    if (stopSending) {      stopSending = !1;      break;    }    if (a[f] != "") {      var n = null;      f != 0 &&        ((n = parseInt(d) + Math.floor(Math.random() * (q - d))),        await sleep(n * 1e3));      l && f != 0 && f % parseInt(h) == 0        ? await sleep(parseInt(k) * 1e3)        : f != 0 && f % 10 == 0 && (await sleep(1e4));      n = !1;      try {        a[f].length > 4 && a[f].length < 21 && (n = await openChat(a[f]));      } catch (v) {        n = !1;      }      if (n) {        var t = isUnsubscribed();        if (t) rows.push([a[f], "User has unsubscribed"]);        else {          b[f] = b[f].trim();          if (            n &&            !t &&            b[f] != "" &&            (document.querySelectorAll("[contenteditable='true']")[1] ||              document.querySelectorAll("[contenteditable='true']")[0])          )            try {              (p && (b[f] += "\n\nSent at: " + new Date().toISOString()),                await sendText(b[f], a[f], 0),                rows.push([a[f], "Message sent"]),                g++);            } catch (v) {              console.log("error while sending to: ", a[f], v);              rows.push([a[f], "Some Error Please Try This Number Again"]);              continue;            }          if (e) {            // let v;            try {              let r = await chrome.storage.local.get("attachment_data");              // v = (await WAM.chat.getActiveChat()).id.user;              if ((r = r?.attachment_data))                for (let w = 0; w < r.length; w++) {                  await sleep(1e3);                  if (c) {                    let u = r[w].fileCaption;                    for (const [B, z] of Object.entries(c[0]))                      u = u.replaceAll("{{" + z + "}}", "{{" + B + "}}");                    var x = u.match(coloumn_pattern),                      A = u.match(replace_pattern);                    n = u;                    if (x != null && A != null)                      for (t = 0; t < x.length; t++)                        n = n.replace(A[t], c[f + 1][x[t]] || "");                    r[w].fileCaption = n;                  }                  await new Promise((u) => {                    window.addEventListener(                      "wam:attachments-sent",                      function C(z) {                        removeEventListener("wam:attachments-sent", C);                        u();                      },                    );                    window.postMessage({                      type: "FROM_CONTENT_SCRIPT",                      message: {                        request: "sendAttachment",                        attachment: r[w],                        // number: v,                      },                    });                  });                }              let y = rows[rows.length - 1];              y && y[0] == a[f]                ? (rows[rows.length - 1][1] = y[1] + " & Media Sent")                : rows.push([a[f], "Media sent"]);            } catch (r) {              console.log("ERROR in sending media to: ", a[f], r);            }          }        }      } else rows.push([a[f], "Invalid number"]);    }  }  currentState = { ...currentState, state: "STOP" };  await chrome.storage.local.set({ currentState }, () => {    chrome.runtime.sendMessage({      subject: "progress-bar-sent",      from: "content",      count: m,      sent: g,      total: m,    });    export_results();  });  g > 0 &&    ((a = {      method: "POST",      headers: { "Content-Type": "application/json" },      body: JSON.stringify({ phoneNumber: myNumber, messagesSent: g }),    }),    fetch(`${url}/api/user/updateUsedMessages`, a).then().catch(),    (a = (await chrome.storage.local.get("DAILY_MSG_LEFT")).DAILY_MSG_LEFT),    chrome.storage.local.set({ DAILY_MSG_LEFT: a - g }));}