I have had this happen for ever, it's annoying, and it does not matter where the offer originates.
From Quebec, New Brunswick, France, I would understand it coming in French, but U.S.A., Holland, Norway, Portugal, etc ?
I have tried multi times to make absolutely certain that my settings here are on English, which they absolutely are; to zero change in the incoming French offers.
Sales are announced to me in French as well.
Canada I know is a French / English country, officially, and my schooling lets me understand some of it, but I want mine in English !
Which flag do you have set for your account?
English flag, except when offers arrive; then I am suddenly always in French, and must switch it to the English flag to continue.
I'm sick of i, and have checked all settings !
Just to confirm...If you go to my ebay and then click on accounts - communication preferences - notification language, English is checked off?