Looks like Transifex is doing the right thing by using |2 and |+ for some multiline strings.
|2is used when the string starts with a blank line.|+is used when there are multiple blank lines at the end of the string (usually an error in the translation which should be fixed on Transifex if it was not intended)
I’d say there’s nothing to do here. |2 does no harm and |+ should be fixed by translators.