Trying to get online

I've had a TheOldNet Serial WiFi Adapter for a few years now and have never been able to get my //e online. I've tried my best to getting the original paperwork for the SSC//, done a bunch of other research, tried Contiki and ProTERM, and still nothing. For reference, I have a //e with 128k, a SSC//, I've been trying to use ProTERM 3.1 and I have a DB 25 cable with a DB 9 adapter and ending with a null modem adapter to the modem. I really want to see this computer online. Please help!