This is a picture of my situation:
I have a site hosted at SiteGround.co.uk (lets call it wild.co.uk) using a wildcard certificate from letsencrypt.org. Then i created a new site for multiple domains, one of which includes a subdomain from wild.co.uk. For this second hosting I got a multidomain certificate (not from letsencrypt.org).
Now I’m getting an email from letsencrypt.org stating that the certificate for this particular subdomain is about to expire.
Should I worry about this?