Problem: I can access these saved meetings from my iPhone, but not from my PC.

Explanation:  I have a friend who hosts Zoom meetings and sometimes has them saved. He gave me the zoom link "address" so I could access a couple of them . I can access them with my iPhone, but not with my PC, on which I regularly attend/interact with his zoom meetings. Can you help me resolve the PC problem here.

I have a 27-inch wide-screen monitor, and when I share my screen and then run a PowerPoint presentation, the viewing experience for participants is worse because it cuts out space on the top and bottom and both side as per attached screenshot (which was taken on the participant laptop).

I also recorded this Loom video to try and explain it:

https://www.loom.com/share/44aa0e1a87014eed827bafd736b39c8d

and I would like to know when in presentation mode on PowerPoint, if the presentation can take more up of the viewer's screen, not less as is currently the case.

I use Outlook Web Access to schedule my zoom meetings with the zoom plugin.  I am in Eastern Standard Time.  When I schedule a zoom meeting and send the recipient a zoom invite, the recipient accepts the zoom invite but the accepted time is always two hours before or two hours after what I originally scheduled the meeting for.  I made sure Zoom and Outlook are both on Eastern Standard Time.  Any ideas as to why this is happening?

My Zoom camera is off center (I am directly in front of computer but I show up way to the side and cut off) and a bit distorted. I know it's not my computer camera because if I just go into camera setting on the computer everything looks normal. I have tried searching for solutions but nothing I have found addresses this specific issue. I tried uninstalling and reinstalling. Don't know what direction to take to get this resolved. I appreciate your assistance. 

I was just wondering how great it would be if Zoom could start its own streaming service or some servers to connect. Over the years zoom has build a very large community of active users and i believe it will be very exciting if Zoom could start its own Streaming platform. Lets see what others have to say on this ?

I facilitated two Zoom meetings recently.  In the first meeting, the presenter shared her own files.
In the second meeting, the presenter needed me to share her files (which I had on my desktop).  I recorded the Zoom session in both cases and wanted to be able to resize the shared file portion of the screen and the speaker's portion of the screen.  In the first meeting, I was able to do that.  i.e. I could make the speaker occupy about 60% of the screen and the file was shrunk as a result to about 40%.  In the second meeting, where I did the speaker's file sharing, I was unable to resize either the file sharing "box" of the speaker's "box".  The speaker appeared in a very tiny box while the file occupied almost the whole screen.  In both meetings, I had made the speaker a Co-host.  Is there a way for me to not lose resizing ability as a Host when I am sharing the presenter's files?  It seemed as though I lost a lot of zoom control capabilities in the 2nd case ... or am I missing something?  Thanks.