My overall opinion of WordPress a drastically diminished of late.
the HTML it produces is often invalid.
The ease of update outweighed fixing broken HTML. However, that's crap now as well.
www.mage-net.net is three t2.nano EC2 instances behind an ELB using RDS of Database.
/ is routed to all three instances.
/wp-admin/ is routed to one.
There are no funny firewall rules or anything stopping outbound connections for all three instances!
Their are
Jetpack Error
Update Failed: 504 Gateway Time-out 504 Gateway Time-out awselb/2.0