How to remove washroom light cover?

The light in our Symbol washroom randomly flickers off at inconvenient moments. Probably a loose connection. Cant see how to get the circular cover off the light. Any ideas?

Perhaps removal is by gripping by fingertips of both hands and squeezing to misshapen, so the circular cover pop's out of the surrounding metal ring. Likewise same action to replace the cover. Hello and welcome to this most friendly and informative forum.

If it is the same as on our Nuevo the plastic cover has three equidistant lugs that pop under the chrome rim. One of those is probably directly opposite the switch - not adjacent but opposite. Just push gently in below the rim and you should be able to pop that one out when the cover will remove easily.

Thank you both for your suggestions . We'll  have a go at both. The worry, of course, is unintentionally breaking something!

We got the cover off, thanks . And unscrewed the fitting fron the ceiling. The problem seems to be right inside the switch casing so i think its a case of put up with the intermittent problem or get a whole new unit!