Problem is that I've had constant problems with Crazy Domains email hosting so have to move to a better email host and am in the process of having a new website built because the web designer that built the old site in Wix won't provide me with login details to Wix hosting. 

I am unable to verify the domain at Wix level and it seems that the cname record I've added into the domain DNS at Crazy won't verify because  of the NS pointing to Wix.

Is there any other way I can verify at domain level?

Please see screenshot.

Thanks