Recover Deleted Items Feature is Greyed Out in New Exchange Admin Center

In the new Exchange Admin Center, the recover deleted items feature appears to be greyed out as shown in the figure below:

To enable this feature, please follow the below steps:

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Add your user as a member of the Discovery Management role group in Exchange Admin Center and make sure Mailbox Import Export permission should also be added in the corresponding role group as shown below:

Steps:

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1. To assign Discovery Management rights, please go to the new or old Exchange Admin Center-> Roles -> Admin Roles -> look for Discovery Management and open -> Under the assigned tab, add your user account and click Add. 

2. To add Mailbox Import Export permission to the Discovery Management role group, please go to the new or old Exchange Admin Center-> Roles -> Admin Roles -> look for Discovery Management and open -> Click + sign and add the permission.