Sometimes tags are not available if you add a task using plus on widget
In rare cases (i can't do good reproducing steps) if you add a task using desktop widget (plus button) and try to assign a tag (label) to the new task, app says that there are no tags.
After creating the task and going to edit it tags are available.
PS: I have premium subscription
Thank you for your report. Unfortunately, so far we couldn't reproduce this issue and we must know how to trigger it to identify the source of it. If there's anything "special" about the circumstances in which it occurs (only in a certain view, or after performing another action or only offline etc.), please let us know.
Also, please tell us which version of our app are you using and which version of Android do you have.
For now, please try to clear the app's cache/data to make sure it wasn't a glitch caused by it.