No, I did not check the logs and just did, thanks, and pre-empts my other suspicion, MaxMindDB issue, I’m seeing some MaxMindDB alerts over time, here is one example being the latest and last log entry yesterday.
MaxMindDB (/var/www/discourse/vendor/data/GeoLite2-ASN.mmdb) could not be found: No such file or directory @ rb_sysopen - /var/www/discourse/vendor/data/GeoLite2-ASN.mmdb
We 11:29 pm
If you are totally sure your credentials right then there is possibility you don’t have two spaces before those lines in app.yml.
@Jagster thanks for the pointer - which lines are you specifically referring to in the app.yml?
DISCOURSE_MAXMIND_LICENSE_KEY: bmljZSB0cnksIG5vIGdvb2QK
DISCOURSE_MAXMIND_ACCOUNT_ID: 1234567
(No those are not real key or ID, of course)
If you don’t have DISCOURSE_MAXMIND_ACCOUNT_ID that might be your problem.
Ah ha! I never knew you needed an account. Doh! 
Does anyone know if there is a fee tier or is it pay for only service?
It’s free if basic data as country, ASN etc. are enough.
@agemo you want to read this page: