“Welcomed” would better used with a past tense, e.g. “you have/had been welcomed”.

You’re welcome 😉

Tense deals with time,when it occurred.

You’re welcome,is present tense or the present time.

You’re welcomed,is past tense or in the past.The sentence is incomplete without a reference to time.

It would be proper to say ,”Have you been welcomed?”(Past tense).

“Do you feel welcome?”(Present Tense).

It’s the present tense.

“You are welcomed” would have a different meaning.

thank u then reply u’re welcome or u’re welcome to join

u’re welcomed to join our dinner party….

hope it helps

“you’re welcome.”