I've been trying to reach the http://calculator.veeam.com/vbr/ but it gives a too many redirects error, and it have been doing that for the last week or so.
Can you have someone check that it is up and running ?
It does not work for me either at the moment. However, please be aware that Veeam R&D is not responsible for these calculators, or for the web-site as a whole.
If you have issues with the website, you are able to open a support case under https://my.veeam.com/#/open-case/.
Could be worth a try, and it would get the request to the right people