I can not track my order, USPS does not give me any information.

Few month ago USPS site stopped tracking parcels from Ukraine an 30 other countries. If more than 3 weeks had passed since your order was sent, you may ask at your post office to check the status of the parcl or contact us and we'll send a claim to USPS

(some local postal services do not provide on-line tracking for international registered airmail. Such as: Germany, UK, France, Italy and Australian post)

Where I can find tracking number of my parcel?

Your account > Orders > Tracking number

I can not track my order, in the post system of my country, how I can be sure that it was sent?

You can track your parcel on site of Ukrainian post: www.ukrposhta.ua