How do I invite people to my zoom call and make it actually work?1?!?!!???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

When I am sharing screens on MS Teams, I can use my ZoomIt tool to zoom in and out on content i want to focus on.  The zoom function of the ZoomIt tool doesn't work on ZOOM, no one can see what I am zooming in on.

Is there a way to zoom in and out using the ZOOM interface instead?

I'm having an issue where I join a meeting that I've scheduled and invited another person to and we end up in different places. I thought initially that this had to do with being in back to back meetings, but I'm not sure that's the case. Here's an example of it happening. 

I see an email pop up that my guest has joined the meeting. I haven't joined yet. I go to my calendar and click on the Zoom link in the invite and end up in a meeting room...and the guest isn't there. I've waited up to 10 minutes and it never shows them. If I end the meeting and then go back to the Zoom link in the calendar invite and re-join, I end up in the meeting room by myself and then shortly thereafter I get a notification that my guest is in the waiting room. What they tell me is they were in the meeting, got kicked out (when I ended the meeting) and then had to rejoin. 

Why am I not ending up in the same meeting as my guest to start with?

I have the date format in the web set to dd/mm/yyyy yet in the windows app 5.12.9 (10650) the date format is mm/dd/yyyy.

It used to be correct until I recently changed my username and password, in which case I was logged out and when I logged back in the format was incorrect. See attached pics.