"Thank you for your reply."

Translation: Dziękujemy za waszą odpowiedź.

[Glyn617152]

I used 'dziękuję' but the answer was 'dziękujemy'. The english question should read (plural) 'we thank you . . ' otherwise singular would always naturaly be implied here.

[immery]

Report.

"dziękujemy za waszą odpowiedź" is common in (our company thanks your company) context,

[Xelareip]

Why would "Dziękuję za twoją odpowiedź" not be correct?

[immery]

Report, it is correct.

[immerweiter]

i "Dziękuję za odpowiedź" czy to prawda?

[immery]

in the real world . yes. on duoilingo your is probably missing

[chb0lingo]

Your sentence literally translates are 'I thank you for the reply/answer' duo took points off because it was confused about your use of singular 'thank you'

[MiriRubin0]

Does za always go with instrumental.

[Jellei]

No, for example here it's Accusative (which looks like Nominative).

When "za" means literally "behind", it takes Instrumental. As for other meanings, the most important are shown here. The problem is of course that different languages use different prepositions in different situations...

[mikegoodwr]

Why should it be "za" instead of dla?

[Jellei]

Well, you never have 1:1 correspondence between prepositions in two languages, and if you thank "for something", that has to be "za coś", with Accusative.

[markclark19]

Dziękujemy is we thank you????

[Jellei]

Yes.

[Mickparkhill1]

I agree it should be we thank you whichoose is perfectly acceptable
England english

[Jellei]

"We thank you" is accepted.