The explanation of how to decide when to use a singular verb versus a plural verb with the term couple seems so simple when I read it, but so tricky when I try to apply it.

Would you please tell me if I have the following sentences correctly or not?

The couple are having marital problems. There are accusations and counter accusatioins. Lack of English skills is preventing them from getting jobs which pay sufficiently to cover housing and other costs.

I think a case could be made for both the singular as well as the plural verbs, but I lean toward the plural.