How to submit a ticket:

Click on “Issues”.
Open a ticket by clicking on “New Issue”.
Select the most appropriate template:

Liquidity Mining / Rewards
Import / Export
User Interface
Other

Add a title, edit the template to add all the relevant information to your case. This will allow the engineers to efficiently solve your issue.
Submit the issue.
Relax, and monitor the issue for updates :D

If you have any doubt, here you can find the Tutorial video