Hi germanlearner (oder Hallo ;) ),
It seems you're mixing up Irish Gaelic and Scottish Gaelic here. Your title is in Irish (Gaeilge), while most of the body of the message is in Scottish Gaelic (Gàidhlig). I know you have it categorized as "Gaelic (Irish)" --and I've pleaded with iTalki to please distinguish the two language, to no avail; perhaps you could assist me with that effort??
I understand your title "the meaning in Irish", but since the message itself is in SG, I can't offer a solid translation of it, as my understanding of it is quite limited. But based on the similarities I see/know between SG and Ulster Irish, it means "Don't close the door, don't open the door".
Are you trying to learn Irish (Gaeilge), or Gaelic (Gàidhlig)?
I do offer lessons in Irish, if you're interested. :)
Hope this helped.