Request CreatePayerAsync error ClientLicenseType

[SpikeAndrea]

Hi,

I have a problem through SANDBOX (https://api.sandbox.mangopay.com/) when create a request through SDK NET CORE CreatePayerAsync . I receive this error message: Message:  MangoPay.SDK.Core.ResponseException : {"Message":"One or several required parameters are missing or incorrect. An incorrect resource ID also raises this kind of error.","Type":"param_error","Id":"ce1e2c3f-31c5-4698-ace9-7a8118f9158b#1679080977","Date":1679080978.0,"errors":{"ClientLicenceType":"Your configuration can't accept users payer."}}

This is a payload

var request = new UserNaturalPayerPostDTO { Email = myemail@test.it, FirstName = my_first_name, LastName = my_last_name, UserCategory = MangoPay.SDK.Core.Enumerations.UserCategory.PAYER, TermsAndConditionsAccepted = true };

Thanks