Mending chinstrap loops on a Gallic G

[Gallic G]

Hi, I recently bought a Deepeeka Gallic G helmet and have been very impressed with it overall, except that the attachments for the loops for the leather chinstrap are very feeble and one has now come off entirely, and the other half way to doing so. I could seek to exchange the helmet, but it would be a hassle, and I suspect I would simply end up with another helmet with the same issue. How does one go about mending them? Could anyone kind enough to respond to this remember they are dealing with an idiot with the metalworking skill of a monkey and a rather basic toolbox.
Many thanks