I paid for my subscription with Bitcoin, however it apparently wasn't enough. I paid the 45 cent balance with credit card and now have a zero balance, but no access to expansions.
According to the logs/database, your first payment actually was successful. And you also should have access to the expansions, it all looks good from my perspective.
In the 'store' tab it lists your current subscriptions on the bottom lines.
Yours should be until 7 Jan 2019 for all sets.
Does it say otherwise? Or why exactly do you think you don't have access?