This helped me and I easy applied changes and passed all tests.
It was interesting and description makes me thinking :)

So the maximum value is not the maximum amount, but the maximum Fibonacci number?

Javascript.
I see description:
"but not including, the maximum value."
But test expects value Great then max value.

(added points to make easy to read)
For max value eq 1.000.000
Expected: 1.089.154, instead got: 257.114

For MAX value: 1000000 wrong test
Expected: 1089154, instead got: 257114

Expected value is more then max available.
Random tests also has the same issue.