I think I recall someone saying that the FMC console was showing 0 for something when it should not. Sorry that is not much help other than it might not be isolated to you. I am sure the UK will get the US team involved at some point and figure it out. At least you can actually use the databases.
Well I cant because its the test server and the file there is out of date, we need to upload a new test file before we can push a new file to production :-)
Although I have found something interesting, the entry filemaker returned for the CNAME value doesn't resolve to my cloud server. They provided fc-v3sk0u-20170317-181831.fmi.filemaker-cloud.com but this does not resolve to 22.214.171.124 or link directly to my instance using the public DNS of ec2-52-50-187-225.eu-west-1.compute.amazonaws.com.
Tweaked dns to an A record instead of a CNAME and pointed it directly at the IP(slapped an elastic IP on for free) of the EC2 instance and all is good