Hi Kaniz, 

Thanks for your message! 

1. Dynamic Queries and Date Parameters: The goal is to create a date filter based on 2 date fields instead of 1, so different start_date & end_date fields. Do you have an example of how to fix this via dynamic filtering or customizing a queries within Looker itself? Did not manage to fix this yet. 
2. Incorrect or Missing Numbers in Charts: tried everything before and multiple charts are still not working. Do you receive similar messages about this? 
3. Alternative Connectors or Tools: thanks will dive into this option!