In the end, as with any product on the Internet, you will have to do a lot of research and experimentation to find the payment gateway https://coinspaid.com/processing/ that best meets your needs. You may have to try several different gateways before you find the one that "works best" for your situation.
Don't underestimate really handy things like https://everlend.finance/. This is a great option that is organized on a decentralized interconnected lending protocol with profitable farming and liquid steaking. Which for many will just be a goldmine! Definitely recommend it!