I had the same issue. Solved it by:
Downloaded the latest xapk version(1.5gig) from apkpure: https://apkpure.com/fallout-shelter-online/com.gaea.sdg.shelter
Installed with their apkpure app.
Worked like a charm
You need two apps: BlueStacks and ProtonVPN (both free).
Install BlueStacks and ProtonVPN on the disk.
Turn on ProtonVPN and change your region to "Japan" (it is only needed to download the game).
Turn on BlueStacks to download and install Fallout Shelter Online from the Google Store.
Change the Region in ProtonVPN to "your" (from this moment ProtonVPN will not be needed anymore. The game will update automatically without changing the region).
Done. Start the game on BlueStacks.
How to install Fallout Shelter Online PC? You need two apps: BlueStacks and ProtonVPN (both free).
Install BlueStacks and ProtonVPN on the disk.
Turn on ProtonVPN and change your region to "Japan" (it is only needed to download the game).
Turn on BlueStacks to download and install Fallout Shelter Online from the Google Store.
Change the Region in ProtonVPN to "your" (from this moment ProtonVPN will not be needed anymore. The game will update automatically without changing the region).
Done. Start the game on BlueStacks.
How to install Fallout Shelter Online PC? You need two apps: BlueStacks and ProtonVPN (both free).
Install BlueStacks and ProtonVPN on the disk.
Turn on ProtonVPN and change your region to "Japan" (it is only needed to download the game).
Turn on BlueStacks to download and install Fallout Shelter Online from the Google Store.
Change the Region in ProtonVPN to "your" (from this moment ProtonVPN will not be needed anymore. The game will update automatically without changing the region).
Done. Start the game on BlueStacks.
How to install Fallout Shelter Online PC? You need two apps: BlueStacks and ProtonVPN (both free).
Install BlueStacks and ProtonVPN on the disk.
Turn on ProtonVPN and change your region to "Japan" (it is only needed to download the game).
Turn on BlueStacks to download and install Fallout Shelter Online from the Google Store.
Change the Region in ProtonVPN to "your" (from this moment ProtonVPN will not be needed anymore. The game will update automatically without changing the region).
Done. Start the game on BlueStacks.
It's certain it will have a global release eventually. 2 months ago Gaea announced that the game was still in beta.
The only reason not to release a followup to a game that received 170 million downloads is that they want to release the game in a complete and polished state. From a business perspective, not releasing the game globally after the beta is nothing short of insane - that would be a potential loss of literally millions of dollars.
When they said they don't have plans to release it globally I'm convinced this was a mistranslation or miscommunication, perhaps even a PR tactic to curb early hype.
In
https://apkpure.com/fallout-shelter-online/com.gaea.sdg.shelter
You will need to install it via the apkpure app itself as most phone/emu wont install Xapk files (compressed content)
How to install Fallout Shelter Online PC? You need two apps: BlueStacks
and ProtonVPN (both free).
1. Install BlueStacks and ProtonVPN on the disk.
2. Turn on ProtonVPN and change your region to "Japan" (it is only
needed to download the game).
3. Turn on BlueStacks to download and install Fallout Shelter Online
from the Google Store.
4. Change the Region in ProtonVPN to "your" (from this moment ProtonVPN
will not be needed anymore. The game will update automatically without
changing the region).
5. Done. Start the game on BlueStacks.
Try on your own accout.
How to install Fallout Shelter Online PC? You need two apps: BlueStacks
and ProtonVPN (both free).
1. Install BlueStacks and ProtonVPN on the disk.
2. Turn on ProtonVPN and change your region to "Japan" (it is only
needed to download the game).
3. Turn on BlueStacks to download and install Fallout Shelter Online
from the Google Store.
4. Change the Region in ProtonVPN to "your" (from this moment ProtonVPN
will not be needed anymore. The game will update automatically without
changing the region).
5. Done. Start the game on BlueStacks.
How to install Fallout Shelter Online PC? You need two apps: BlueStacks and ProtonVPN (both free).
Or... Just download client and play the game there.