In first scenario, you have to specify the string to check for query string parameters. By default, the utility looks at the browser URL. Ref Doc: https://docs.adobe.com/content/help/en/analytics/implementation/vars/functions/util-getqueryparam.html 

This is coming due to Incorrect date format used in your report. You should be using Date range format as yyyy-MM-dd'T'HH:mm:ss/yyyy-MM-dd'T'hh:MM:ss

This is a backend setting and can only be checked by Client Care Team. You can raise a ticket with client care and they will assist you further based on same.

You can run Pages report against Event capturing Lead generation. In case you want to look at the URL being used, you need to first capture page URL in a variable as page url is not available bydefault in R&A and Workspace.

There can be multiple reason but the most common factor is when the Same As Site Catalyst option is not enabled for a report suite. Ref Doc: https://helpx.adobe.com/in/analytics/kb/same-as-sitecatalyst-vista-processing.html But it is good to raise a ticket with Client Care to get more clarity

Once the schedule DWH report throws an error while editing, it can't be fixed. You would need to set up another schedule by duplicating it.  

Creating a product profile within Admin Console for Analytics solution will help. These product profile is replacement of user group in the user management.

This looks to be an issue and would request you to raise a ticket with Client Care

With the recent changes in June MR, Recipients added to the “Can edit” role can save over a project that has been shared to them and function as co-owners. This enables better project collaboration with members of your team. Ref Doc: https://docs.adobe.com/content/help/en/analytics/analyze/analysis-...

You can use Marketing channel processing rules for setting Marketing Channel Reports for mobile app based report suites. These reports are independent of Ptaform ( App or website) and are run based on marketing channel processing rules configured within Report Suite Manager ( Admin> Report Suite> Ed...