LL Review projects have a time limit of 300 words/hour.
For example, if the project's word count is 700 words, you'll have 2 hours 20 minutes to post your review.
Projects with a word count below 200 words have a fixed timer of 30 minutes.
The project status will change to “reallocated” on the project page if the allocated time expires. Expired review projects are not compensated.
You can ask for more time to complete the review using the Request More Time field: