Call the dealer for replacement under warranty
Kena7000, your 2020 should still be covered under Airstream’s 3 year warranty. Just call the dealer and email them a photo of the broken one. They can mail you a replacement if you’re not close enough to pick it up. My dealer replaced the shower door sweep seal that way.
By the way, get some silicone grease and rub it on the rubber and the lever part on the top. They’ll work smoothly and won’t break. Silicone grease is used to lube auto disc brake hardware; you can find it at any auto parts store.
2019 27’ Globetrotter FBT Walnut/Dublin Slate
2019 Ram 2500 6.4 Hemi Laramie Blue Ox 1000#