Absolutely perfect
Absolutely perfect: 1) They do relevant corrections 2) They do it quickly 3) If they are not sure they highlighted the text and suggested edit 4) In case of a problem they immediately react 5) They edited my text directly in overleaf so the burden with merging text wasn't necessary I would particularly highlight their service because they are really responsive and do things as they are supposed to be done. Thank you very much, Antonin