Certain tasks in Wordapp can be done only several times in a certain timeframe. Don’t postpone doing them to maximize the tasks you can do on the project!
For example: 1 task every 7 days
If you take a task and submit it on Monday (1), you can take a new task again the Monday (2) after and the Monday (3) after that. If however, you take second task on Thursday, you can take the third task the Thursday after that.