FIrst things first, hire an attorney and file an injunction against gfm. Ask the court to provide immediate relief with a cease and desist order baring gfm from withholding, blocking, canceling or interferring in any way with this gfm accout.
2nd. A class action lawsuit should be filed against gofundme for discrimination, fraud, tortious interference, attempt to defraud and anything else the attorney can come up with. And do not settle. In discovery demand all communications internally and externally in regards to this account. This will be extremely important as everyone who does business with gfm should know exactly who is directing actions like this as the truckers are not the only ones that gfm has done this to. Sue these motherfuckers into oblivion. Triple damages and triple punative damages.