Rocket League is a vehicular soccer video game that has been developed and published by Psyonix. Although previously the game was paid for, it’s available for free to play on PC only from Epic Games Store since last year. As an online game Rocket League has several errors or bugs and the Trade-in Disabled Error is one of them.
If you’re also experiencing the same error recently, you can follow this troubleshooting guide to fix it. The Rocket League Trade-in feature has been disabled for a while and players are getting the error message that says “This feature has been temporarily disabled. Please try again later”. It basically appears whenever players trying to cash in items and players can’t trade in their gear.

How to Fix Rocket League Trade-in Disabled Error
Meanwhile, some of the affected Rocket League players are even unable to find their cosmetics in the inventory as well. Luckily, Rocket League Status Twitter handle has officially acknowledged this issue that Trade-ins will remain disabled due to PsyNet issues, and they’re working on it.