Hi, I just want to say that I love your app;
For whatever reason it seems that the login token for itch.io keeps expiring within Mitch; specifically on reboot of the whole phone :/
If you go to an item's download page after paying for it, there are suggested items that may be similar to what you just bought. Hovering over these items will reveal a tiny 'Add to Collection' button that will bring up the collection UX and etc. This button works fine in Chrome.
However, in my Chromium-based browser, Vivaldi, the button only spits out a Javascript error.