Step 1. Go to your profile
Click the menu icon on the top left of your screen and click Profile.
Step 2. Select change level
Point to the item and click its 3-dot icon on the right side of the page. Select Change Level.
Step 3. Select a level
Select a new level. Unless your current level has been declined, you can only select higher levels than the one currently validated.
Step 4. Request validation
Until your new level is validated, you'll see both the previous level and the new level on your profile.