

UGREEN Charging block having spider webs on the outer layer? Is it safe? What happened?
Hi, I would like some insight regarding this ugreen charging block please. These spiderwebs just appeared out of nowhere. I'm not sure if it is because I store it with my 70% rubbing alcohol bottle while travelling and it leaked onto it and damaged it, or if I put too much stuff on top of it or if it is an electrical issue? I have had it for about 1.5 years and dropped it around 10 times from 1 meter.
Is it safe to use? Is it just cosmetic? What do you think happened? It was very expensive so if it is just cosmetic, I don't want to buy another one.
Any helps is welcome, thank you in advance.