Yeah, I kind of suspected as much. I had a feeling the private keys that I exported weren't the same as usual, since Coinomi accepted them, but showed they had no funds, even after I had verified the related public addresses did indeed contain BTG.
As I said, it's only $130. I'm grateful after reading so many horror stories of people with large balances having other 2fa issues.
Actually, I do have the seed, but I can't at the moment read it. I put it in an AES256 encrypted document in my google drive, but the password that I have for that file in my local password manager isnt working.
Sounds like trying to solve that mystery is the thing to do.
Thanks to all for their thoughts.