Simple script written in JS will allow you to set unlimited time on your exams
setInterval(() => {window.startTime = new Date().getTime()},0);
Paste this to your browser console or use Tempermonkey/Violentmonkey
- exemplary Violentmonkey config
// ==UserScript==
// @name Testportal simple time bypass
// @namespace https://*.testportal.pl/
// @version 1.0.0@Stable
// @description n1
// @author NeZ
// @match https://*.testportal.net/*
// @match https://*.testportal.pl/*
// @grant none
// ==/UserScript==
setInterval(() => {window.startTime = new Date().getTime()},0);