If a contest’s prize is deemed insufficient, freelancers may request for a prize increase by using #increaseprize on the contest’s Public Clarification Board, as shown below:
How to increase the contest prize
Go to the My Projects page, select the Employer view, and click the Open Contests tab.
When you’re on the contest page, click Upgrade Contest.
You will be able to make quick changes to your contest, particularly on the Upgrade your Prize section. From there, simply enter the amount on the given field or slide the prize bar to the right.
The box to the right will change its recommendations depending on the amount you enter. The higher the prize, the better the projected results of your contest are.
Click Upgrade Contest once you are done.
Alternatively, you can also make the same changes using the Edit Contest page. To know more about it, please read Can I Change the Details of My Contest After It Starts?