Every time I click "hire" to 'trade' a rider, it brings me straight to the error page and the rider stays with the original stable.

Also when I try to enter the amount of experience I want, when I press submit it moves it to "D Skill" instead.

Ok, these things should be fixed now. :)

Thank you, Eve! <3

I have been trying to search by rider level and no other criteria and it's ignoring (and then deleting) the level I've chosen.

Try it now. :)