Sumup works fine fer me and has done since Bill (RIP) from FN set it up fer me back in 2018.
I had an issue with the reader not accepting inserted cards, simple solution, dumped it and bought a new one fer about 30 Euro. Easiest thing to set up, it actually sets its self up. And I kept the old one as a back-up.
Commission 1.42%.

Needs charging every 3 months.

I'm not sure how often they pay out, but just checked my bank account and all last weekends funds are in.