Why cant I watch anything in my watchlist

Hey guys. Recently downloaded Plex and Media Server. Plex runs, saw that I was supposed to have received a Verification mail that I never got but seems they let me purchase the Plex Pass anyway.
So, my problem. Media Server wont start. Sometimes it signals code 740, mostly just nothing.
Second, I cannot watch anything in my watchlist. I have followed every step in the instructions, I have looked at several youtubers, nothing.

I have a laptop, Intel i7 and loads of memory.

Just because you add somethign to your watchlist does not mean we have it for streaming yet, nor that it is available on your server yet. It may only be available on other streaming service sites. If something is available to stream somewhere it will show on the Recommended page of Watchlist.