To check invoices for your UpViral account, follow these steps below:
Step 1 - Go to the Settings page.
Step 2 - Click on "Billing".
You will then be able to see the invoices made for your account on that page. 
Step 3 - Once you click on "See Invoice", you'll be able to see an option there to Print a copy of the invoice for your own use.
How to get your support tickets resolved faster
Statistics have shown us that the more you tell us when you report an issue, the faster we solve that ticket. So...
1 - If you have screengrabs, please include them. A picture is worth a thousand words.
2 - If you have recorded a video showing the issue you're having, please include that as well. A video is worth a million words.
We recommend a free service called Loom for creating these videos. (this is a link to useloom.com)
3 - To speed up ticket resolution, follow these useful tips How to Write the Perfect Support Ticket (That Gets Results Fast)