After the Myanmar military coup seized, the military blocked internet access on February 1. Then, they opened the internet access again and blocked Facebook.
Now, the military blocked some google services and social media: Facebook, Twitter, Youtube, Google Drive, etc. So, internet users in Myanmar use VPNs to access those services.
Myanmar military cutoff the internet services from 1:00 AM to 9:00 AM on Feb15 and Feb 16.
According to the unconfirmed news, the Myanmar military is receiving technical support from the Chinese Communist Party ( CCP) to build similar internet firewalls to block access to Facebook, Twitter, Google New York Times, etc. And those technical configurations require cutting off the internet temporarily.