Importing a sticker pack that is not available/requires VPN causes the app to be stuck in loading "..." until you reload the page (ctrl+r).
Although this fixes the loading issue, you can't use the app anymore until you delete the folder with the id of the sticker pack in the "Stickers" folder or create an info.json file with {} or {"title":"","storeURL":"","author":"","authorURL":""}
Thx
shimotsuki.