ترجمة - برتغالية برازيلية-لاتيني - Assim seremos unidos,para que juntos possamos...

From "ut" we have here content clause. You must use here con. praesentis or imperfecti according to consecutio temporum.

Not "uni" but una. It is an adverb. You can't decline it.

una

But "possimus" is conjunctive present.

Profecto! I have to wear my glasses I guess.

I do wear mine all the time (I have to).