In some regions or states more and more subdomains or addresses of VPNProviders blocked. (China, Turkey, Morocco, UAE, Qatar, Oman, etc.) Therefore, it may make sense to have a way to help yourself through a manual setup.
In the example given, you connect with one VPNServer to Erfurt from Perfect-Privacy VPN. I deliberately did NOT find the server address for this.perfect-privacy.com ”but the server's IP address is specified directly. This solves some problems that can arise when establishing a connection in restrictive environments.
The server IP addresses as IP (numbers) can also be found in the customer area of Perfect-Privacy under Server
As DNS you can use other providers instead of 126.96.36.199 (Google DNS). Eg. Yandex DNS: 188.8.131.52
Instructions step-by-step. PPTP setup on Android devices!