Export Woes for ACX

Dear Audacity Help Center:
I’m having problems with exporting. As a working draft I can get my audio file the way I want it (passes ACX check), but when I export it, the file becomes compressed and no longer passes. I’m using Audacity 3.3.3. I don’t know why it’s doing this it but it happens whether I export as an MP3 or a WAV. Any assistant would be greatly appreciated. Thank you.

Is your gain set to 0 in the track control panel on the left ? Perhaps @kozikowski has some suggestions.