Sharepoint List - Customize form with powerapps

[barlowse]

I am a guest user on a another tenant's sharepoint site, and trying to customize a sharepoint list form, when clicking the option to customize the form with powerapps, I get re-routed to my own default environment. I can't customize the form.

Is there a limitation on the guest user access to do this?

I was able to create the sharepoint list without issue. Just can't customize the form for the list.