VsevolodGolovanov

Here's how to export your movie history from Must, just in case it goes under.
Go to https://mustapp.com/@<your_profile_name>/watched
Scroll down (hold End on keyboard) until the whole list is loaded.
Open Browser Developer Tools, Console.
Paste the following line and press Enter:
(() => { let exportResult = ""; $('.js_item_product').each((i, el) => exportResult += $(el).find('.poster__title').text() + '\t' + $(el).find('.poster__rate').text().trim() + '\n'); copy(exportResult); })();
Now your clipboard contains a list of Tab separated movie titles and ratings.

For Series (includes number of unwatched episodes after another Tab, if not finished):
(() => { let exportResult = ""; $('.js_item_product').each((i, el) => exportResult += $(el).find('.poster__title').text() + '\t' + $(el).find('.poster__rate_stars').text().trim()  + '\t' + $(el).find('.poster__rate_progress').text().trim() + '\n'); copy(exportResult); })();