SEO Issues on Wix end

I am stuck on how to rectify these issues and am a bit dubious about bringing my clients aboard, every single audit I do shows the same issues.
Can anything be done or are Wix working on these issues?

Thank you,
Christian

Hey Christian - I will ask the best person in the world who can answer this at Wix. I’ll let you know when I hear back.

Thanks Brett,
I love Wix as a platform, so would love to see these things sorted.

BTW the site looks fine on my iPhone X, I just don’t want to get penalised by search engines.