As others have said, your campaigns will still function, for example if you had set up Rollable Tables or Dynamic Lighting, those things would just stop working (e.g. you couldn't use the rollable tables anymore, and the whole map would be revealed even if it was hidden before by the lighting), but you could still play the campaign. If you re-subscribe, those features are re-enabled. If you have stuff on Dev, you would lose access to it if your Mentor sub expires, but again we don't delete anything so if you re-sub you could pick up where you left off. Hope that helps!