All my wards are R17 can’t do anything.
That’s not a bug though…
Welcome to the forum! Unfortunately, that’s not a bug. PerBlue intentionally makes the wards use the server’s highest promotion level. You can gripe at support about it, but that’s not likely to change anything.
It’s going to take a little while, but PerBlue’s roadmap for the game has “Invasion: DIfficulty Scaling” listed as in design and planned for the 2.7 update, probably in March; hopefully this will allow lower-level players to meaningfully participate in Invasion.