I had a pickup installed in my acoustic guitar. The pickup has a little battery bag with Velcro on it, and the set also included a sticky "soft" Velcro strip to attach it to the inside of the guitar.

Unfortunately, this Velcro strip keeps coming off and is no longer tacky. I think it has to do with the amount of dust inside the guitar, it's a 1971 so it's got some dust in there.

Ive tried cleaning off a spot (no liquids used) to attach a new set of Velcro strips but THEY keep coming off as well. Is there anything I can do to help this stick properly? Maybe a drop of superglue, or something else?