Homelab

So I have run into a bit of a weird problem with my next cloud instance. I have a NextCloud instance hosted at let's say "nextcloud.mydomain.com" and it's pointing to my public IP. I can pop this into a browser and my mobile app and it works fine with no issues coming up with the proper cert and is secure. I wanted to add a local A record so it points to the local address while at home rather than leaving and coming back figured it would be better for performance. I use PIhole as my DNS server. I went into Local DNS> DNS records in the PIhole web GUI and added an A record where the domain is let's say nextcloud.mydomain.com again and the IP is let's say 192.168.3.10. Now that the record is in place I went to test it out. I pulled open a browser on a device on my LAN VLAN at IP let's say 192.168.1.10 and navigated to the website and works great and is secure. When I pull it open on a device on my WIFI VLAN at IP lets say 192.168.2.10 it gives me a connection is not private error giving me the error code "err cert auth invalid". This usually happens when using a self-signed cert or whatever but my domain does have a working SSL cert attached to it as it clearly worked in other scenarios. Thoughts? Any ideas why this maybe?