Looks like most of the money doesn’t go towards the stated cause. Bait and switch. Directly from your link:
60% of each contribution first to Save America, up to $5,000/$5,000, then to DJTP’s Recount Account, up to a maximum of $2,800/$5,000.
40% of each contribution to the RNC’s Operating account, up to a maximum of $35,500/$15,000.
Any additional funds will go to the RNC for deposit in the RNC’s Legal Proceedings account or Headquarters account, up to a maximum of $213,000/$90,000.
odd looks like the dono page directly from Donald j Trump official website splits your donations the same way.
It says you can specify to have all your donation go towards the election fight, I would do that