I need some help translating this part of a sentence, I have enclosed the whole sentence for context.

'atá á dtuilleadh acu agus atá de dhíth an tseirbhís seo a bheith acu.'

Ciallaíonn sé sin go bhfuil géarghá le hinfeistíocht i gcúram leanaí sa chaoi go mbeadh sé sothagtha dóibh siúd atá ag streachailt ar atá á dtuilleadh acu agus atá de dhíth an tseirbhís seo a bheith acu.

atá ag streachailt ar atá á dtuilleadh acu - who are struggling on what they earn

atá de dhíth an tseirbhís seo a bheith acu.

I would have written this as:
atá an tseirbhís de dhíth orthu

and who require this service.

Looks like a bad translation from English to meamraiméis to me!

I think it's "air" rather than "ar":

atá ag streachailt air atá á thuilleadh acu

(I don't know if you'd use "air" in conjuction with "á thuilleadh", and "orthu" in conjunction with "á dtuilleadh"?)

I think the second one would use "bhfuil":

a bhfuil an tseirbhís de dhíth orthu