Fix #19735: Server unable to advertise its self after connection loss

distribution/changelog.txt

@@ -11,6 +11,7 @@
 - Fix: [#9534] Screams no longer cut-off on steep diagonal drops.
 - Fix: [#17666] Using the mountain tool near the edge of the map with clearance checks disabled causes visual glitches.
 - Fix: [#19450] The correct element is now auto-suggested when building a Medium Half Loop backwards.
+- Fix: [#19735] Server unable to advertise to master server after a connection loss.
 - Fix: [#19822] Tile inspector does not deep copy banners.
 - Fix: [#19823] Parkobj: disallow overriding objects of different object types.
 - Fix: [#19878] Unresearched scenery can be placed via prebuilt rides.

src/openrct2/network/NetworkServerAdvertiser.cpp

@@ -284,6 +284,7 @@ private:
         else if (status == MasterServerStatus::InvalidToken)
         {
             _status = ADVERTISE_STATUS::UNREGISTERED;
+            _lastAdvertiseTime = 0;
             Console::Error::WriteLine("Master server heartbeat failed: Invalid Token");
         }
     }