Unexpected error 10548 with Pypal sandbox and NVP API. All recomendations are passed

Question

I read this https://www.paypal-knowledge.com/infocenter/index?page=content&id=FAQ1147&pmv=print&impressions=false&viewlocale=en_US

But I meet all recommedations and my sanbox merchant account does not accept payments anyway.

I enabled Business Pro for the account, the merchant's country is US, the phone is also presents but I get the error. Please see attached screens: there are account settings, the data that I send and the data that I get.

account settings:

the values that I send:

the response that I get:

Answer 1

I am having the same problem. It appears to be a known issue on Paypals side. Here is what their support told me:

I was able to confirm your account is encountering the issue being reported by several other merchants. We already have a case filed with the development team to have this resolved as soon as possible. I have added your account to this case so that as soon as an update or resolution is provided, you will be automatically notified.

You may want to contact them (if you havent already), so you can be added to their notification: https://www.paypal-techsupport.com/app/utils/login_form/