There are a few things that could be causing this:
1) You're new to the platform: Upon first joining Stint, you may find that you aren't receiving as many offers as you would like. This is because your first few reviews will help us to assess the kind of Stints that are best suited to you. This means that when you first join the platform, you might receive Stint offers less frequently while we await initial feedback. It's really important that you try your best to achieve 5* reviews during this period, as it will help us to send you the widest range of Stints possible.
2) You've had a negative review: If you have already been on Stints, negative reviews could be affecting the number of offers you are receiving. Your average rating will influence the number of Stints you receive. If you get a bad review but generally receive very high ratings, this shouldn't have too much of an effect. A poor review can have a bigger effect if you don't already have a track record of good Stints.
3) You've had a reliability issue: Last minute pull-outs, cancellations, bad communication, and arriving late will result in the equivalent of poor reviews, this means that being unreliable will also affect the number of Stints you receive.
4) Your availability window is too narrow: You should make sure your availability is as accurate as possible. However, if you're only putting in an hour here or there, you're unlikely to be matched with Stints. There will also be a greater number of Stints during busier times, such as lunch and dinner, or during the weekends (where the demand is higher amongst the businesses we work with). If you would like more offers, it might be worth tweaking your availability (while still being accurate with when you are available).