How to setup pfsense on oneprovider.com with /32 mask?

Question

FreeBSD

ESXi, it is given the main address, + 2 more failover addresses, one is given to the Windows virtual machine, the second to the pfsense gateway. Poppies of cards are registered correctly, everything is fine. Windows receives the Internet and works with it. PfSense is weird endlessly. If you write a mask / 32 - nothing works at all. The provider advised to set the /24 mask when installing PfSense, then change it to /32. It didn’t work that way, because the gateway is further than /24, I set it to /1, the Internet works on machines behind the gateway, but it doesn’t work on PfSense itself and port forwarding doesn’t work. Put ClearOS - the same effects. I put Windows on this IP + MAC - everything is fine. What to treat?
Mana in the internet like

# route add -net gatewayip/32 -iface em0
# route add default gatewayip

tried

Answer 1

a. How many bits are in an ip address?
b. What does the mask mask?
ab-2 is the number of addresses you can assign to hosts.