I think there were a couple on there. Maybe consolidated into one single one? It is an important one.
Anyway, I think it is worthwhile providing some info here directly. The issue is around the striker cap on older Fire Safety Sticks becoming wet.
If you have the issue, email
info@firesafetystick.com with a request for a replacement striker cap if it looks like this:
(note: the advice is to not touch or wipe the cap, but let it dry in the air)

They will ask for information such as place and date of purchase.
I sent a message last night. Had a reply waiting for me when I opened my email client this morning and is being dealt with. From what I can tell, all being sorted promptly and professionally.
This was within the reply ...
"Thank you for your email. Yes, that shouldn’t be an issue, sending replacements for you. Rest assured in the meantime the strikers despite being damp will still work in am emergency."
As I understand it, the manufacturers changed the material the striker was made from some time in 2023 and the new one doesn't develop this damp effect.