Floodlight cam pro lens cover

Recently our floodlight cam has been playing up by constantly setting the light on after dark without any motion detection. I've been trouble shooting and today went to re-add to my network to see if that helped. Upon inspection, I noticed that the lens cover is hanging off and doesn't look like it's going to stay for much longer. I've tried going through the help support to raise a ticket, but like most companies they make it impossible to actually speak to a real person via chat or telephone. Anyone else had this issue? I'm reluctant to try fixing it myself and making it worse by using glue etc!