Yes, the character limit for a username is 28 characters and 32 characters for project names. Avoid using newlines, tabs, and consecutive spaces. If the character limit is exceeded, you will not be able to confirm the nickname or project.
Here is a table for the character limits for each of the following:
Min Characters | Max Characters | |
Project | 3 | 32 |
Username | 3 | 28 |
Folder | 4 | No Limit |
Chat Group | 3 | 29 |
Event Name | 1 | 50 |