Hey — thanks for the detailed report, this was a real bug and you nailed the description. What happened: at the end of your first season, the game got stuck in a half-started "heading to a show" state (most likely from clicking a show the same weekend you'd already used your Saturday), and it saved itself that way — which is why refreshing never helped and it followed you through five seasons. Every show button was silently hitting that stuck flag and giving up.
It's fixed in the latest build, and the good news for you specifically: you don't need to restart or touch anything. The update detects the stuck state in existing saves and clears it automatically — just reload the game on the new version and your shows will work again, with all five seasons of progress intact. Since you're sitting on a garage that's had five seasons of wrenching, you should be walking into Regionals loaded. Sorry for the lost show time, and seriously — reports this precise ("refreshing doesn't fix it" was the clue that cracked it) are gold. If anything else feels off, send it our way.