I am 100 percent disabled, and I am on probation, I am on SSI, I can't pay my fees because of my disability

You should talk to your probation officer because they will waive the fees they can if you qualify for the waiver - and any fees that have to be paid, the probation officer OR the court clerk in charge of 'collection' will work out a payment schedule you can live with.  They will not/ cannot revoke your probation due to an 'inability' to pay the fees. Talk to them.