Typing a message to a buyer

[misu77]

Trying to reply to a buyer on eBay typing a return message to a question I can only type letters individually by pressing mouse after every letter ??   

this has not happened typing this now 

can any assist me 

tried to speak to eBay was told every thing was working 

?

[fargvs]

 Known intermittent issue if you have 'Grammarly'  text checker installed on your device/s ? ... if so, disable it temporarily.

[fargvs]

 Known intermittent issue if you have 'Grammarly'  text checker installed on your device/s ? ... if so, disable it temporarily.