Yes, or just call someone on the board right now.

Thing is, it is probably a typo. They'll just change the website from $ to %.

I'm not sure there is a leg to stand on legally in recouping any money. It may be stated as a percentage elsewhere, or on the contracts, in the covenants, etc. The fact that you paid it several times may indicate an agreement to that cost.

Couple comments, $7 (or 3$) seems ridiculous to be charged to pay a bill. There should be a better way to pay it.

On "Crappy HOA", all financial statements are available, and you can probably download them all right now from their website. The fact is, there are costs involved living in a neighborhood. Much of mandated by law. You need a reserve fund, you need insurance, you need to maintain property. It's pretty much unanimous that everyone complains about HOA costs, but for most of them, they are as bare bones as legally possible.