How to install/activate on windows?

[CWC621]

I'm Kaspersky Anti-Virus 10 device user for many years ago and discontinued the renewal.
planning to downgrade the plan since I don't use that much device anymore.
Bought a Kaspersky standard 3 device 2 year license.
but when activating using the activation code
it says invalid region, then I uninstall the old kaspersky anti-virus
and installed kaspersky standard free.
then after activating it say the license is not support on this app.
so is this kaspersky standard is not for windows 10/11?
because when I'm on mykaspersky subscription,
trying to download on subscription it only shows mobile.
did try send download link to email but when open it on PC
there is no any action or download from the link provided.
even when I click on "click on here to download again."
when logged in my account to the kaspersky standard app on PC
my windows PC dosn't show up on Kaspersky Standard license subscription
it keeps showing up on Kaspersky Anti-virus (old subscription 10 device)
any solution should I do?

can I file for a refund?
since this plan looks incompatible for windows.

[Berny]

@CWC621 Welcome.

Please see : Activation code is invalid for this region
 

[harlan4096]

Also, are You in USA?

[CWC621]

I'm at Taiwan.