TB, same as with birds, tuberculosis. Most people are of the opinion that sauvagii 'carry' it, but most live with it. A few don't.

As for cycling, on which forum are you getting the contradictory information?

You can independently research the climate in their natural environment to confirm, but briefly in the Gran Chacos there is a warm wetter season and a colder dryer season spanning half a year each. A bit like our winter and summer seasons, but switched the other way around being in the southern hemisphere. The breeding of course occurs during the wetter season to allow tadpole development. The colder season needs to be replicated to induce egg development with the females and trigger breeding behaviour.
Mine are now in the depth of the 'winter' with night temperatures down to 17C and day at 21C ambient. Higher temperatures are available under the basking light, but they avoid it entirely. They are pretty much inactive during this time although food is always offered. Humidity is 10-20%. As temperatures are gradually raised over the next couple of months, the frogs will become more active and are fed heavily at this time. By April they will be considered to be conditioned for breeding. All temperature changes are very gradual and accompanied by photo period changes ranging from 13 hours daylight in 'summer' to 11 hours in 'winter'
Diet-wise, roaches are great, crickets too and moths etc are also eagerly taken. One of out best feeders, the locust, is I'm sure unavailable to you where you live, but you presumably have alternative grasshopper species that you could obtain? Variety is key, as really it ought to be with all things!