Chess.com on mobile devices

I have experienced multiple issues on chess.com using a mobile device. It's perfect on a laptop, or computer, but it never works on mobile, as many times I try!

If I go into the chess.com APP on mobile:

-it only allows me to create games of standard chess, or the variant chess960, and no other variants!

-unfortunately, we just can't accept any challenges any random player has made.

-Sign in issues...

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If I go into the chess.com WEBSITE on mobile:

-An error will occur when it loads if u select to play a variant

-if you play a variant for example, Crazyhouse, then yes you will have the ability to earn extra pieces, yet, you cannot have the power of placing that extra piece you have captured.

Have any of you been experiencing these problems?

Yes.  The apps don't have variants other than Chess960.   They never have.

I use a mobile browser on the chess.com website 90% of the time I am logged in and it works fine for playing regular games, doing drills, watching videos, answering forums, etc. but I don't try to play variants.

I would imagine that screen size is the main reason that you can't play some variants like Crazyhouse on a mobile browser.   On Chrome,  I can choose an option for "desktop view".