Orestis,
R Arae itself is an algol-type eclipsing binary (mag 6.17 to 7.32).
It is also a component of the close visual binary star (HJ 4866AB), its companion being mag 7.8 about 3.3 arcseconds away.
See here ...
http://adsabs.harvard.edu/full/1991Ap%26SS.180..233N
I'm guessing that observations of light variability will be complicated by the close visual star i.e. a composite of both stars.
Regards, Rob