Needs to improve the extension for Google Chrome, written in javascript

There is a simple browser extension that allows you to search for certain products on the Wildberries marketplace. It is written in javascript and over time it began to work incorrectly. You need someone who can refine it and make edits. The programmer who wrote it can no longer continue to work on it due to the move. Below I attached the extension, and in person I will already tell you what I would like to fix. The budget is discussed depending on the amount of work, then there will be additional work on the expansion. Also below I attach a link to a video of how it worked, for a general understanding. youtu.be/uYYYjF-wkcE from about 6:00 a.m.