Hi. May limit po since January 2014 pa. It was implemented by Globe for their own reasons. It has benefited some and hurt others usage too. It has been a long issue and Globe strictly implemented it to protect its own right.
Kung kulang po ang usage or limit maybe the only way to increase it by availing higher promos or plans. That way maybe it can atleast satisfy your data usage.
Sabi nga nila, convenience has a higher price. Anyway, you can always call 211 or visit globe.com.ph and explore all the promos and find what suits you as to your liking. Good day!