hi, check my initial Post. I posted some pictures of the settings. If you do it like this it will work. I had to make a factoryreset before.

@Ivaylo yes, it was enabled all the time.

@Ivaylo still the error. but the port is open.

@Kevin_Z its working now. I have no idea what was wrong but i made the factory restore like 5 Times and now it works. Havent changed anything.

@Ivaylo yes, i think Kevin is a tp link member and he has already reported it. I try to send a mail or open a support ticket. Cant be to difficult to change the software.

@Ivaylo i have done it and it is not working. No VPN Connection. It must be a problem with exactly this router, cause with the old one it works perfect, with all kind of fritzbox it works. Must be...