Wrong message when trying to activate the Subscription Proxy on non-US region

[ValentinaPC]

Affected versions:

• All Firefox;

Affected FxA versions:

• 1.175.0;

Affected Platforms:

• Windows 10 (64-bit);

Preconditions

• Have the latest Subscription Proxy (that points to FxA stage) installed;

Steps to reproduce

1. Set your browser to a non-US region.(i.e using Windscribe)
2. Sign in to activate your Subscription Proxy.
3. Finalize sign in.
4. Turn on your SP.

Expected result:

• A message informing the user that the SP is only available for US regions is displayed.

Actual result:

• The “You are offline. Check your network connection and try again.” message is displayed.

[ValentinaPC]

Verified this while using the latest SP version (v23 - from 22.06), on FxA stage, Firefox Nightly, Windows 10, with a mailinator account.
Results:

• The “You are offline. Check your network connection and try again.” message is displayed at SP activation.
• If clicking away from the dorhanger, the SP activates with success after few seconds.
  Please see below video.