Warning message popping up

[TheImminentGin]

When I clicked on 'my mumsnet' I got a warning-safari cannot verify......bcp.crwdcntrl.net. I opted to cancel.
Is it dodgy?

[Stiles]

I just got that too!

I clicked okay.

[TheImminentGin]

Oh, did you come on to report just in case? You brave incha. Wimp me.