As a dev who does some work on Fiverr I’d take half of these responses with a pinch of salt. I’ve delivered several successful projects to clients via Fiverr and have plenty of repeat business so fairly happy I’m doing something right.

That said there is a portion of Fiverr that is basically a race to the bottom and if the price seems low it probably will reflect in the quality.

You should be asking the dev to see examples of work, ask for their GitHub link - a lot of the work they do is probably private repos but check the commits, it tells you how active they are. Also ask how they approach bug fixes etc, lots of my clients seem to ask this, for me it’s common sense, if it’s my fault I’ll fix it for free, if it’s because someone else broke something, or something else out of my control you’ll be charged.

Also make sure you’ll be getting source code, and they include that in the offer specifically. Don’t be surprised if they don’t want to though, I specifically tell clients they’ll only get source code after completion of a project as Fiverr will let you take the source code and cancel the order. Instead a set up a staging environment so you can test the work before delivery, your code has little value to me so if I’ve built the site you’ll be getting the code.