Trying to sync into Mongo db Atlas with realm but is not working

Hello friends. I am trying to sync into realm atlas and authenticate the created users with email/password method. I am setting up the connection with @realm/react method. It seems that everything is going according the plan. but I keep receiving the messages in the Gmail that connection process occurred but it failed and I don’t have an idea what causes it. From console.log I receive the generic message of [Error: Network request failed].

Google msg pic:

Thank you for your time guys.

Hi Lukas,

What cluster tier is your app trying to sync with?
If it is a M0 or one of the shared tiers then it’s most likely a resourcing issue.

See my explanation of a sync error that would be associated with this type of root cause.