Here I am in the UK on a few weeks holiday. I had sufficient experience of Roon Arc to know that it is not always reliable and I could have difficulty in accessing my Core. I dutifully downloaded numerous albums so that I could listen off line. The first time I try, I am asked to log on again. Then of course Roon Arc wants to sync with my Roon core ‘for the first time’ which it is unable to do. It will not allow me to access all those albums I had dutifully downloaded in the expectation of hours of happy listening on my holidays. This is not good enough!
I am afraid you won’t be able to listen to your music through ARC during your holiday. Once it’s down, the only way to get it back to life is to restart Roon Server. You will have to be at home to do so, unless you have an option to access your system from abroad.
Whatever I do, I have lost my downloaded music. This is ridiculous.