I wouldn't be able to say as I was never on AR. However, sandboxie not working doesn't necessarily mean it was being blocked. Things as innocent as a W10 update can (and have) broken virtualization software, so I wouldn't be surprised if there were compatibility issues, particularly as this game is notoriously finicky about the environment it lives in.
Now, if the blocking was intentional, the determined user could escalate to using numerous other methods to which I alluded.
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