GiveWP & Stiripe took away 6% of my donation

I am trying to fix this non-profit site, and I was informed that when someone donated money that we only got 94% of it which means 6% got eaten up, I thought that most credit places only take 2-3% why did ours get taken up by so much?

• This topic was modified 3 years, 1 month ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic

The page I need help with: [log in to see the link]