Transfer app without developer enrollment
Apple Support is your absolute best contact. They might be willing to let you renew your old account and then refund the fee once you get the apps all transferred out or be able to work something else out.


https://developer.apple.com/support/


They could say, you need to pay $200 - one for each account to make them both active and then do the transfer. After all, if you have the code, you could simply recompile and resubmit the app under a new name if it didn't make you $100 to keep the old name in terms of recognition and continuity of app store ratings, good will, reduced app review time.