Thank you for your reply!
I'm sorry that I don't know if I understood what you meant because of the translation I used.
In fact, the games games downloaded from the webpage are playing fine. It's just that the games downloaded from the itch.io app seem to update automatically, so I'd like to try to get the app to recognise the games I've downloaded from the web and be able to update them automatically.
I've tried moving the web downloaded game to the app's default download location or to a download location I've added and then letting the app scan to recognise it, but this hasn't worked. That's why I'm asking for help.
If not, I'll consider downloading the update manually or re-downloading the game in the app.
Anyway, thanks for reading and answering my question! I also wish you good health! Have a great life! All the best!