There are zero specifics to the complaint here. This could be as simple as "you violated the clearly posted rules of the specific community". Add to that what, at least externally (if not also actually) appears to be ban evasion, and there are plausible other reasons why what happened might have happened.
And then there's stuff like,
> I was also advised to sign up through the mobile app, as that would make my account seem more trustworthy.
And then there's stuff like,
> I was also advised to sign up through the mobile app, as that would make my account seem more trustworthy.
… which is just utterly off the mark.