I don't know that a L2 is needed. The p2p orderbook overflow & relay acceptance issue needs investigation by devs to determine the path forward. It could be that hodlhodl sent 10,000 events in a short amount of time, which triggered relay spam guards.
nostr:npub1yul83qxn35u607er3m7039t6rddj06qezfagfqlfw4qk5z5slrfqu8ncdu which relays are you sending to? In what amount of time / frequency are you sending events? Did you batch send?