Despite building the Twitter ecosystem using 3rd party developers and their innovations to fuel growth, Twitter have spent recent years steadily forcing 3rd party solutions out of the market. Monitter is no exception here.
Since monitter is an unpaid side project, it has been left wanting for the necessary upgrades required to continue operating. We ARE still working on our new version, however we've been unable to get it ready in time for the Twitter API sunset this week.
Get in touch: @monitter