Can I buy extra time on a Lisburn on-street bay after the maximum stay?

No app can extend a parking session beyond the maximum stay shown on the sign for that particular Lisburn street bay.

Nidirect says that cashless parking extensions are permitted only up to the local maximum and must be made before the session expires. If you need longer in Lisburn, plan for a suitable off-street car park rather than repeatedly extending a short-stay kerbside bay. Maximum stays vary by signed location, so do not assume every town-centre street has the same restriction.