British English Dictionary (Marco Pinto)

5 ਤਾਰਿਆਂ ਵਿੱਚ 1 ਮਿਲੇ

ਵੱਲੋਂ Zog ਅਪ 19, 2018 ਤੇ · ਪਰਮਾਲਿੰਕ

I've followed the FAQ but it doesn't spell check anything and all words come up underlined. Yes, I have selected English (GB) in the spell check settings; yes, I have uninstalled any other dictionaries (I even removed the Firefox GB Language pack as well); I've tried uninstalling and reinstalling several times with no change.

I've had to go back to the standard GB Language pack with a (bizarrely) US dictionary - at least the majority of words are checked now :-(

EDIT:
Can't reply to the comment below directly but I've tried manually installing the addin as per the instructions but there is no difference.

EDIT 2:
Yes, as mentioned in the original post, I have selected the Dictionary/Language for Spellchecking in an editable field - This is when it switches from just highlighting non-US words to highlighting every word so I know it's made the switch (It just doesn't accept any words as spelled correctly).