1) WHY are you trying to update? Please don't say "because updates are a good thing, I learned this from Microsoft Windows forcing updates on me for 15 years."
2) Repos are often down. Repos also have security, if someone from your IP range has a bad reputation, you can be blacklisted and thus blocked from that repo. However, there are mirros for OpenSuSE repos all over the world so you can find another one and switch to it. That would be an OpenSuSE issue, not related to Vicidial. OpenSuSE is a Very Large project and has many more users than this site does. There is a lot of support available for how to manage the OpenSuSE OS, much more than this site has to offer. I don't have time right now or I'd request your IP and find you a closer repo after checking to see if the primary repos are presently up from where I am.