My Custom GTP just stopped running in my android app

I started to build a custom GTP and it was working fine. I need it to run on my Android phone but it just stopped running. It continues to run fine on the desktop (Mac).
Also, everything is fine if I add the same information into standard chat, so it’s not the phone. Contacted support and after trying everything they suggested, a few times they said it’s a known fault with the app. I have been waiting about 3 weeks for this to resolve. Any advice would would be helpful.