Not only a few months ago, you're creating certificates almost daily! Look at this HUGE list of certificates generated the last past few months:
Also, you're creating double certificates each time. Both have the same hostnames in the SAN (apex domain and www subdomain), but in one the apex domain comes first and is used as the CommonName and in the other the www subdomain is used as CommonName..
You really need to STOP this useless issuing of certificates at once! This is putting extra and useless load on the Let's Encrypt systems. While the certificates might be free for you, it is not free of charge to keep a CA like Let's Encrypt up and running. The more load on the systems, the more it costs to LE.
Please check if you have some kind of run-away ACME client which keeps issuing these certificates and FIX it.
After you've fixed your ACME client and it doesn't uselessly consume certificates any longer, we can talk about what happened to your
talents subdomain. (Hint: all those useless certificates don't have the
talents subdomain in their SAN and your webserver is using one of those many many certificates with just the apex domain and www subdomain for the talents subdomain too.)