Can't add ports in ROS 5.5

RouterOS Beginner Basics
1

I’ve added a bridge but I then go to add ports to that bridge and the + and - buttons are greyed out.

How can I add ports?

(I’ve just upgraded from 4.17 so I’m learning if things have moved)

2

Do you have user with full privileges or write policy?

M.

3

Yes, ended up flashing the unit back to factory settings and that fixed the issue.