A powerful email and collaboration platform developed by Microsoft, designed to support enterprise-level communication and productivity. Miscellaneous topics that do not fit into specific categories.
Do you have this issue via the web https://www.outlook.com, or via Outlook app, or both?
I see that your domain is registered through Google and you want your email host to be Microsoft, right?
Did you set up your domain correctly in Microsoft using this instruction? https://learn.microsoft.com/en-us/microsoft-365/admin/setup/add-domain?view=o365-worldwide&tabs=domain-connect
Please go to Admin center and make sure your domain health status has a green check first.