In the post (body) you should include the following information:
Your version of Windows - 10 64-bit
Your version of Opera - Version:72.0.3815.49 Update Stream Beta
If the problem is with a page, a link to it - 
A screen-shot of the problem if it's related to something not showing as should - This is what should show: 
A description of the problem, including as much as information as possible:
This web meetings tab is my main problem. Is been like this for a couple of months but I have been compromising until now I need to access it more often than before and I do not want to switch to another browser for this that seems trivial. Edge and chrome and mozilla load the web meetings tab just fine. But all of the opera browsers I have tried so far (Opera Desktop, Opera GX and Opera beta) none loads the page. I just downloaded Opera beta 30 minutes ago with all fresh settings to try to see if it might have a fix here but it is still not working either.
Steps to (try to) reproduce the issue : I just go to the same web meetings tab from any opera browser. The other way is been showing is that - I created an index.html and the html files that it is linking is not loading instantly and can take up to 5-10 minutes to load in (not sure if they might be related) same happens with new style and script files. I checked the Networks tab and there is the version of the html/css/index that was previously there as if it had loaded the same thing while all changes were more than double checked as saved. If I open it with another browser it is changed indeed...
I would really appreciate help with this! I love using opera and I by no means want to change it T . T
Also, in reference to the closest related post I found: my computer does not seem hardware acceleration and i do not get black spots anywhere so that shouldn't be the problem at all.