I live in a tropical country with humid weather. Recently my boots have become moldy, and I was wondering if whether anything can be done to restore it.

This is the boot that I bought in its original colour:

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I have also previously conditioned the boot with Obenauf's leather preservative, and it has turned the leather dark.

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May I know if whether there is anything I can do to:
1. Remove the mold
2. Restore the pull up effect

I am not sure if whether the leather is an oil pull up or a wax pull up, but I am sure that the leather is an aniline leather.