During PickMeApp deployment its application ID is not set correctly. It causes failure of PickMeApp registration.
The problem occurs only for users who downloaded a latest (0.5.10.0) version. An update of 0.5.9.27 works well.
The issue will be fixed ASAP.
Please use contact form on PickMeApp site to request your application ID. We will send it to you by provided e-mal.
You also can use the contact form for support requests.