Export apk - urgent requirement


I’m working on an app that will be distributed as an apk file (to users with no internet connection) and can no longer export /package to apk. I’m not a developer and the Creator platform has allowed me to do exactly what I needed to, including exporting previous versions as apk, but now that the final version of my app is due, the option is no longer available. The help desk are not replying to my emails and my deadline is fast approching. Can anyone tell me what might be happening? My next option may be to download the files and ask someone else to package it for me…
Hoping for a solution