Not filling in certain fields

[Ladergorn]

Hu, nice extension, a real time saver - thank you - but I have noticed that autofill-forms is not showing in context menu sometimes.
Eg on this site:
https://www.citizensadvice.org.uk/
Scroll down to "Find your local citizens advice" and I try and fill in post code from context menu, but cannot (no option).

Many thanks,
Lance