Accidentally deleted domain from Zoho Mail but cannot readd it!

Accidentally deleted domain from Zoho Mail but cannot readd it!

Help! I accidentally deleted the domain adventistsconnect.gq from the Domains section in the Zoho Mail control panel. I need to put it back, but for some reason it's not letting me re add it! Could someone from Zoho please readd it for me? Thanks!
If you need to contact me, please email me at contactadventistsconnect@gmail.com.
-Noble Obodum
Founder & President, AdventistsConnect