myallprowebtools URL causing bounces

I was checking into why my emails are bouncing and some of them are saying that they were blocked because they included "myallprowebtools.com" URL. Is there a way to remove this?

Yes, you have not yet moved your account from the temporary domain to using your own domain as explained here: viewtopic.php?f=9&t=3981

When you "go-live" with your own domain, all authority and reputation come from ONLY your domain. This gives you complete control of the online reputation.