Vray Problem ?

Hello there,
Although my licenses are active, I encounter this problem. Can you help me please ?
The video of the problem is attached

Do you use the latest V-Ray build - Download | My Chaos
I’ve seen a similar issue with the older ones.

I have tried to download and install the file you have given and I get the following error message.’
‘‘the checksum of the installer doesn’t match. This could indicate a broken download. please , try downloading again.’’

I’ve tried this process many times.

Problem is solved . Thank you very much for your interest.