Sending Invites

Hi there!  Strange little issues.

I have forever been sending invites to my Zoom calls via my gmail account.  I enter in the first few letters of the recipients in the window and the full gmail address comes up...I select it and send.  No problemo.

Now all of a sudden the gmails are getting bounced....up comes an error message saying the address could not be found (?) or is unable to receive mail.

I tried instead to send the invite through my default email (which is my Outlook email account) and it makes it.

So if I jump over the gmail and instead send it through my Outlook it makes it it seems.

Another strange thing that has been a constant is that I have two businesses, Second Nature Landscape Design and SkyWord Tutoring.  Both have separate gmail accounts.  When sending the Zoom invite for a Skyword Tutoring session over gmail, it always gets sent from my Second Nature Landscape account.  So, my tutoring students get the invite from the landscape company instead of Skyword Tutoring.  Weird-o. 

Anyone have any ideas??? 

Thank you!