To log in to Plesk, you'll need the username and password provided in your welcome email. You can access the login page by entering your domain followed by :8443 or using the specific URL provided by your host.
To log in to Plesk, open your browser and type
https://<your domain name or the server IP address>:8443
in the address bar. The Plesk login page will open.
Type in your username and password, and then click Log in. If you want to see the Plesk interface in a specific language, select it from the “Interface Language” menu before logging in.
If you are logging in for the first time and are unsure what your username and password are, check your email for a message from your hosting provider. Most likely, the username and password can be found there. If you are still unable to log in, please contact your hosting provider for assistance.
https://docs.plesk.com/en-US/obsidian/customer-guide/quick-start-with-plesk/log-in-to-plesk.77963/https://docs.plesk.com/en-US/obsidian/quick-start-guide/getting-started-with-plesk.74372/
