Dream Report 4.8 License Activation Issue

Hello Experts,

I faced License activation as follows :

I am using Dream report V4.83 SP2.( OS : Windows Server 2012)

1. I have installed DR V5.0 for test and activated licenses by using Schneider Floating License Manager.

I can see the licenses ID in DR software

2. I purchased the licenses for DR V4.8 so I uninstalled the V5.0 and installed the V4.8

But now issue is DR cannot detect the licenses after restart.
Please suggest the way to activate again the licenses so that DR can detect it

Kindly support urgent.

Thanks,

Stolz Enterprises.