Thank you guys for your kind replies but blocking at the country level does not apply in Bahrain. I just tried VPN to a server in the US so that I have a US IP address on my cell phone. Trying multiple times under this setting, the site was reachable at the rate of like once every 3 to 5 trials. It takes time to successfully connect, but times out frequently. So it is the slow connection as far as I can see it. Now my question is whether there is a way to extend the timeout period of certbot---just making it a bit more patient.
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