Problem opening google web app on mobile, do to /u/1/ placed in url when you have multiple accounts

when opening the google web app on mobile, it gives: Sorry, unable to open the file at this time.

I noticed that URL changes, and it shows:


My app is to be used by anyone, and lots of users have multiple accounts on cellphones (like me).

it works ok if I embed it on the website or post a link in Facebook Messenger… but then I cant dynamically pass parameters to that link…

is there any solution for that?