Unreasonable delay of the deadlines for submission of the project (the task check took 11 days).
Unclearness and change of task layout (in the beginning it was necessary to make an approximately similar site, then a exact copy).
The chaotic nature of communication (the proposal to transfer the message to the messenger I rejected immediately; the longest interval between the answers was 10 days).
After the completion of the project, several more tasks arose, the solution of which was not agreed and was not paid.