Hello there. I installed ubuntu 18.04 and plesk installation via Azure. How can I run grandnodu with Plesk? I do not have any SSH information so I can send files via ftp and do transactions with plesk. Can you help me ?

I didn't test it in that way. But as I see in the Plesk tutorial, you need to install ASP.NET Core 2.1 on your webhosting with Plesk. Then you will be able to install GrandNode.

Best,
Patryk