I just published a website www.alshairgroup.com. the website looks fine but the new hosting affected the email both sending/receiving, there is a current G Suite that is being used peviuosly and now accounts cannot send and receive emails.
If you updated the nameservers to point to your new website, the email (MX) records may have been affected. You simply need to update those records in your DNS and your email will function again. Please allow some extra time for propagation after your change.