Cannot connect using Companion

I uninstalled the companion app in my phone, reinstalled it from Playstore. Now, although it says i'm connected on the website, nothing happens on my phone other than seeing the scan page.
If I tick the Use Lagacy Connection checkbox, it works, but strangely afterwards it brings up an error with the Mfile extension. I know it's the extension because if I delete it, the error goes away, and everything works ok.

Any ideas?

sometimes it doesn't work, i usually have this problem so to fix it I try another device or just wait.

Duplicate of Why is it so difficult to save a CSV from a List? - #64 by Mike_B, please discuss in that thread!