Single Channel Packet Forwarders (SCPF) negatively impact proper operation of gateways and nodes in your area which means it negatively impacts the network and other users. Not only now, but also in the future when new nodes and new gateways are added in the area.
Use of SCPF’s is depricated and it is advised to use true LoRaWAN compliant gateways instead.
See: Single Channel Packet Forwarders are deprecated and NOT Supported [guidelines]
That that there is still some SCPF related information available on the forum has historic reasons.