Have you enabled “Allow programs on other systems…” in the Remote control settings?
Interesting enough we just had this discussion in another thread, and AFAIK it must be enabled…
I have the same problem tonight after the last update, and HDMI-CEC doesn’t work either. I’ll grab a USB keyboard and try the fix suggested above.
Odd that CEC isn’t working either, does that rely on JSON (no idea)?
**** UPDATE **** I couldn’t find the Pi on my network list using the ‘Fing’ app so restarted my router and that fixed it - potentially not an OSMC issue! However, CEC is still dead for me.