I do not see the add button to add a theme or a font

[mara]

Correct

32-bit R not available as Global Option in 1.2.907 RStudio

We are indeed planning to drop support for 32-bit R in the v1.2 release of RStudio -- sorry for the trouble. Would it be tractable for you to port your code to use the odbc package instead, or are you relying on 3rd-party code that itself makes use of RODBC?