So after knowing that TransferWise is not accepted from payment processors and fintech companies.
We are now back to zero!
We started looking on how to open a business bank account in UK, and we found some online information but unfortunately we need to travel to UK.
So we decided to focus on building and marketing the marketplace itself connecting it to PayPal express checkout for the mean time, until we travel to UK at the end of this year and open a business bank account from there.
If you have any experience or advices for us, please let us know :)