Your site is working fine from here. This seems to be a problem with your DNS/network security provider, InfoBlox:
From a quick Google search I could not find how to report a false positive detection to them, perhaps you are more familiar with them as the system you are on is using them. Check if one of your browser’s extensions is responsible by visiting the website in incognito or guest mode; or by using a different browser. If not, you could try changing your DNS resolver.
If this is a work/education issued system, with this protection preconfigured and you’re unable to remove it, you may need to get in touch with an administrator of the place that issued it to you as mentioned in the message.
You can also do as @Greenreader9 mentioned above and use a personal device and/or cellular data.