Because, I have once gone through all this pain. At that time people and also few experts on this forum used to say that these pre 2000 models civic don't work with a scanner device at all. These ECUs are fully dumb and only good to produce MIL and the DTC should be read through a series of blinks.
I bought Hondash back in 2014 or 2015 if I recall it correctly, at that time it costed me around 7000 PKR.
Before investing more money I would suggest you to make proper connections with the device that you already have. Select the right communication protocol and see if it works. If it don't then buy the ancel icar2 device, I haven't checked it myself but I believe that it should work. Even if doesn't work you can still use it with your second car or you can sell it later on.