Verification wix blog

Please help me, I don’t understand how to verify my website made with . I can’t access to the file required, and I don’t understand the other option (but I think I don’t have the access too, wix is a really closed platform). Could somebody help me ?
NB : I’ve the premium option, my site is already like

If you have, then you can try verification using DNS record method (it’s easier, IMHO).

I’m not familiar with Wix, so you may want to ask Wix support to help you add DNS record to your domain.