This service can be very helpful, but make sure you:
1) Select your forwarder carefully and read fresh reviews in advance (you can read about forwarders on Parcl.com itself
2) Only pay via PayPal through the button on Parcl
3) Don't "confirm receipt" on PayPal if a forwarder asks you to, contact Parcl support immediately/ask for a refund and go with a different forwarder (create a new request).
Shipping carriers are separate entities and their performance is not controlled by the forwarders or Parcl, Lost or damaged items can take eternity to be compensated for and thats just how it is.
This service just connects you with other people that are willing to help. You register as a shopper on Parcl and they register as forwarders. Parcl does not claim to control the performance of its users.
All of this is stuff is actually stated upfront when you make an account. Its funny, but many people don't like to read, do they?