Cargo Bikes

What’s the bungee attached to? QR lever?

Also you might find that those forks bottom out more often- the ones UA source have a double spring (one in each stanchion) and no lockout.

I don't want to scare you, but please be careful using any fork that isn't cargo approved. The braking loads you can get on a loaded cargo bike with the centre of gravity low behind the front wheel are no joke. It took suspension fork manufacturers quite a long time to develop a fork that could pass the tests. The test forces for a bike like urban arrow are at least 3 times as high as for a normal 20" bike and that's over 100000 fatigue cycles.

This is a common experience with any cargo that uses suspension forks, none of thrm are upto the job IME. Catastrophic play developing within 600 miles in some cases. But usually wobble on till around 2000 miles until the movement gets so bad folk finally look at changing them. Tern, R+m and Ua all use similar fork and all give their excuses when you go looking for a replacement beyond warranty period.
Having a fork is a nice idea on a family orientated bike and advise would be get the fork lowers off and have it greased with fork /suspension grease on day 1 when the bike is new. Then strip and regress every 6 months of regular use, or 1000 miles, whichever happens first. If you do that they will last much longer, bushs will still wear but the stanchions won't be eaten through with corrosion and physical wear!