Issue
As an agent, you aren't receiving chat in the Omnichannel for Customer Service app. The issue is caused when you receive the chats in Customer Service Hub app.Resolution
You must remove the Customer Service Hub app from the channel provider configuration in the Channel Integration Framework app.
Sign in to Channel Integration Framework.
Select the record that is related to omnichannel.
Remove Customer Service Hub from the Select Unified Interface Apps for the Channel section.
Select Save to save the record.