Product(WX045L) 20V POWER SHARE FULL-SIZE HOT GLUE GUNGlued shoe soles are not adhesive
(WX045L) 20V POWER SHARE FULL-SIZE HOT GLUE GUN

Glued shoe soles are not adhesive

Try this solution

Use a specialized adhesive

Possible cause:
Moisture causes leather to puff up and creeps under the bonding location.