New to gardening and wondered about this. Looks like there are white spots on the branches and the leaves are dying. I read that they need acidic soil, orginally I didn't use that, but got some after the plant looked bad. I wasn't sure if I should dig up any any soil in worry that I would hurt the roots. So I just put acidic soil on top, is that what I'm supposed to do? Also, any tips if this is a disease and what I should do about it?
Here are the pics - https://unsee.cc/dumesigo/