No squarespace emails after server migration on my end

Site URL: https://onyxhive.com.au

Hey guys,

So my domain server host changed their server on their end and they had to re-config my e-mail through webmail and outlook which is all good.

I can send and receive e-mails from my work domain email info@onyxhive.com.au from other sources such as gmail, hotmail and so on.... but not im NOT getting any squarespace e-mails at all. For example, I usually get e-mails that I have a new order, but now after the server changed, I am not getting the emails anymore. Not even in junk or spam folders.

Even when I sent test e-mails to from campaigns, order confirmation emails to info@onyxhive.com.au, I am not getting them now.

I send the test emails to my personal gmail and hotmail account and I have resent confirmations to customers and they are getting them. But only squarespace emails I am not not receiving.

I have spoken to the person hosting my e-mail and he said there's nothing blocked and there's no blacklist or any rules in-place to block any e-mails.

What could it be?