1. Modified materials have been used: the personal signature contains vulgar, uncivilized, advertising and other illegal words, which cannot be modified again. Users change their personal data again to ensure that they do not contain illegal words, and then modify their names.

2. Problems with 2.Tik Tok server: The modification of personal data is restricted, so the name cannot be modified. Users wait for the official to fix the problem and change their names at other times.