Trouble With Translations (Latin)?

The first version comes nearer to what you want but the forms of the words are not all appropriate.

It literally says ' I open, the door never will close (something)

Online translators suggest vocabulary but are not capable of telling you how to use it correctly.

I'd suggest ~ ianua patefacta numquam occluditur. { or use 'praecluditur' }

The first is a little better, but neither is right. It should be "Ianua aperta [or "patefacta"] nunquam clauditur/occluditur/se claudit/se occludit." Take you pick for the verb.

The first translation at least uses a verb, but both "occludere" and "claudere" (from which "occludere" comes) are transitive verbs and must take direct objects. The way to use either in an intranstive sense is to make it passive or reflexive. The second translation uses the adjective for "close" in the sense of "near." "Occludet," incidentally, is future tense. In addition, "patefacio" is the first person singular of one for the verbs for "open." To say "opened," you need the past participle, in a form that agrees with "ianua" (feminine).

Edit: Zlevad is exactly right.