It seems that ebang website is currently under attack or might have hosting issue because I can't able to go through with their website I used archive.org to check only the download URL of that software which is this.
https://ebang.oss-cn-hongkong.aliyuncs.com/EbitMinerMiniV1.0.3.5EN.zip
The problem is that the link is also dead or it seems they remove it.
Why not try to use other managing tools like Minerstat, Awesomeminer and hiveOS. They do support ebang units and support almost all ASIC models.