I hear what you're saying- I'd be especially concerned/surprised as I wouldn't expect this recall to cause the dry weight to change; just the cargo carrying capacity (being decreased). I'd try and see if your dealer can email/text you a photo with the current sticker.
Looking at your profile, it sounds like your camper is a Vibe 6504. The specs online show a gross vehicle weight lower than your new sticker's advertised weight:
Vibe Travel Trailer by Forest River
Something is definitely amuck.
Can you check your title/registration and see if the VIN matches?