Translation:We dare to sleep in the big, old and empty building.
Regarding your question -- uitdagen or (zich) wagen would be more usual. The latter (wagen) can have similarities to durven -- as in the contexts of "Wij durven in het grote, oude en lege gebouw te slapen." -- as well as uses such as, "We dare not go there." or "He wouldn't dare think of saying that." etcetera.
Additionally, wagen (not used as a reflexive verb) can be used when 'issuing a dare/challenge to someone, but uitdagen is probably more usual/common in this case:
Waag het eens. -- "I dare you to."
Ik daag je uit om het te proberen. -- "I dare you to try (it)."
Wagen can also be used to mean "to risk, wager":
- je geld/leven wagen aan ... -- "to risk your money/life on ..."
The reflexive form zich wagen means to venture in a 'hazardous' manner -- such as venturing onto a frozen body of water or through a dangerous area.
zich op het ijs wagen -- "to venture onto the ice"
Hij waagt zich op het ijs. -- "He ventures/is venturing on(to) the ice."
de sprong wagen -- "to take the plunge" (e.g. to jump into water that may be cold or filled with hazards) -- or it could be used more figuratively:
zijn kans wagen -- "to try one's luck/fortune"
een poging wagen -- "to have a go/shot/try at something; to give it/something a try."
Waag het niet om te lachen! -- "Don't you dare laugh!"
I think "vacant" and "empty" have different meanings in the context here.
"Vacant" implies a continuous state of not having any occupancy (such as, not having tenants). (E.g. The apartment building has a vacant suite. The management is looking for more tenants)
"Empty" refers to the state of the building at the current moment ( and it is not necessarily known if an empty building has tenants that may return later). (E.g. An empty warehouse is often a good temporary shelter for the homeless for a night)
I haven't had this problem, but I read a comment somewhere by someone who said he adjusted the font size on his device, and it fixed the problem. My impression is that he was referring to a universal setting, which would affect other (if not all) applications, so it's not an optimal solution. I don't know if it's possible to make such an adjustment within a single application.