First thing i'd do is get the s/n and model of boat. I dont think the kayaks have 10 yr warrantees but i'd check with Aire -- maybe some of the US made ones did. (warrantee is also shorter if purchased by a commercial outfitter). Keep in mind warrantee valid from sale date not born on date but if you dont have the proof of purchase they may have conveniently forgotten.
You can then determine if you have a bladder issue or a valve issue. Soap and water or swimming pool works.
There is no way you can do as effective a job patching as they could do "welding". Same goes for the bladders. The outer shell might need zipper work but usually you can do a simple interior pvc patch using staybond
If no longer under warrantee, You might find out what they want to "refresh them" or the cost of a new replacement bladder.
Otherwise i think staybond works well on the bladder if you have similar bladder material. Some use tearaid but i think its a temporary fix. Aire recommends patching the bladder on the outside but the valve hole is big enough you may be able to sneak a patch into the inside where i suspect the air pressure would work in your favor
Keep in mind if aire is doing the repair they can cut the bladder at the seam, weld in a new patch, and then weld again at the seam. As well as replace a much larger section than i would feel comfortable patching
Hey, if you want me to take a dump in a box and mark it "guaranteed", I will. I got spare time.