There is probably some technical difference but conversationally, they mean the same!

Any correction is appreciated.. Thanks

'We are invited' is a present perfect tense.In this the action is finished. We are not invited now.. "we have been invited" is a present perfect continuous tense. In this the action is unfinished. We are invied yet... I hope its help you.. If u r still confused. Then watch *mmmenglish* on youtube by emma.. The leaason regarding this