Importantly, there is not API to provide a list of illiquid scrips?
It would be really great if there is an API to report this rather than having to check this Google Sheet and enter manually.
Are you using the correct instrumentation ID from the mapping in instruments API for the trading symbol you want?
I was facing something similar, I enabled debug mode to find that the instrumentation ID I was sending was undefined.
Not sure why even after repeated npm installs it gives me v3.0.1. I hardcoded v3.1.0 in my package.json and tried npm install, now I have the latest version. Never experienced such weird behaviour on NPM before.
Anyway, that solves my issue!