Welcome to the Candy Crush Saga Community
Do you have a question or need help with your game? Ask the Community.
@ChezJ Try copying the link into your browser and see if that works. At the very least clicking on the link should take you to your game.
Also check that you actually have F5 as a Feature in your game. If F5 isn't listed in your Features you will not be able to join a team.
If you know the team name search for it in your F5 and then send a 'Join' request.
Also when the team comes up in your search it will tell you how many members it has, so you can check if Goldenswordz is right about the team being full.