I did this already, but the user is not created. I tried another way: I have a free membership. So I started with this and then upgrade the membership. Ok, the user is present here, but the other settings (changing the role) didn't happen.

I tried it again. This time I got an unexpected error on the website (please try again later) after saving the payment. I also got two errors in the log:

Failed IPN Validation. Response: HTTP/1.1 200 OK Date: Thu, 19 Jan 2012 07:27:34 GMT X-Frame-Options: SAMEORIGIN Set-Cookie: cwrClyrK4LoCV1fydGbAxiNL6iG=ZeiJwNbk6plITYzGVat3-wC8bgS_uCL1zwbjOkYVDTwQPgbp6wBCxgDDRTsX_YvymMH0MjLxEY-vF3588sMXGxleVbjIrEObXaoGnCFJbNQiyHfxsXqA7y44EaYFWlWCggCNPG%7c1G5gIcweK0QLzE7NvSFd4MeaT2HsuzesNwfx-6jePtfMSkAokzuVTMCgSkeZvjKDh3SN6W%7cEuU7DDs7CxwYUHxRTGpRVOBMAOZEP3M8FKrZRG3I1G4XMwjTScWSWSb-a3UREQrycvyAtG%7c1326958054; domain=.paypal.com; path=/; Secure; HttpOnly Set-Cookie: cookie_check=yes; expires=Sun, 16-Jan-2022 07:27:34 GMT; domain=.paypal.com; path=/; Secure; HttpOnly Set-Cookie: navcmd=_notify-validate; domain=.paypal.com; path=/; Secure; HttpOnly Set-Cookie: navlns=0.0; expires=Wed, 14-Jan-2032 07:27:34 GMT; domain=.paypal.com; path=/; Secure; HttpOnly Set-Cookie: Apache=10.190.8.160.1326958054475839; path=/; expires=Sat, 11-Jan-42 07:27:34 GMT Vary: Accept-Encoding Strict-Transport-Security: max-age=14400 Connection: close Content-Type: text/html; charset=UTF-8 Set-Cookie: TSe9a623=952f2e22c744cb024cb77e5ddf648a09a057dcefd3e4ee284f17c5e6a0e24589e9f53ef3634137d16081497ffaa6df6385ae782bba64fcf83ecccf34b4608ba7a7200f16; Path=/ Transfer-Encoding: chunked 7 INVALID 0 Vars:

and

Error: An IPN has Failed Validation. This may be from a spoofed IPN or an attempt to hack. Here are the details: Data:

Both errors are of the type ms_paypal_wps although nothing was processed via paypal.

I tried it again and now the payment is saved. The difference was that I wrot 6.07 instead of 6,07 as we wrote it in Germany. Maybe this was the problem.

BUT:

Although the payment was saved for the order the status for the user was not updated. I have a basic account for free and premium accounts. I tested  ordering the premium account (upgrading from the basic account) with a bank transfer as payment method. After saving the payment I still get the basic membership (list memberships) and the changes of roles for the user are not processed.

I already did it this way. The difference is, that I have a basic account for free and the user changes the membership, so the user is already created at this time.

I have the order, click edit and add payment. Then the order id is free, not filled out. I fill out the order id and the amount. The checkbox is checked. After clicking save I get an error "Error loadingt the order". There are no errors logged.

Ok, the order id is filled out and the order is stored without an error. But the change of roles which I set in the membership plan is not initialised. The user is still a basic member.