Mobile device traffic not completing

PFSense is setup correctly to deploy DNS, all LAN wired devices work flawlessly. On mobile using Nextdns via my router handing it out or manually setting it in the android settings will result in some apps not loading. 
I have turned off ALL filtering settings / rules / blocklist / etc on the Nextdns profile and nothing gets blocked in the logs either which is confusing. General apps work fine but its half - half to what does and doesnt. Hours looking into this I am stumped.