Hi,
Thank you for posting the questions to Microsoft Q&A platform.
1- is there a way to get a soft copy of a purchased licenses any how ?
As per my knowledge, there is no such way to get a copy of the windows license. But for double confirmation, I suggest that you could contact the Volume Licensing Service Center
2- is it true that the grace period is no more working in Win server 2019 ?
There should be still 120-day grace period for RDS service, but the session will disconnect in 1 hour. Before you can install RDS role or use the RDS CAL on the server, the server still first needs to be licensed.
3- is there a way to get a temp licenses for 90 days till we receive the ones purchased
There are only temp RDS per device cals but no windows temp licenses. I think you can only use evaluation version before you received the license. But it cannot be used for in-place upgrade.
Hope the above information helps.
For reference:
https://learn.microsoft.com/en-us/windows-server/get-started/upgrade-overview
https://learn.microsoft.com/en-us/windows-server/get-started/perform-in-place-upgrade
https://learn.microsoft.com/en-us/windows-server/remote/remote-desktop-services/rds-client-access-license
https://www.microsoft.com/en-us/licensing/product-licensing/client-access-license
Best regards,
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