Ok. Downloaded and installed fine, although I did have to set up an account. Then it all went pear-shaped. As several others have mentioned, the 20GB storage space turns out to be 10Gb. I emailed the address given but have had no reply 5 hours later. I set up a folder and tried uploading some zipped files – the files will only upload one at a time, so you can image how long it’s going to take to upload tens of gigabytes of data. And if it takes ages to upload, I believe it’s going to take ages to download too.
I won’t be uploading any more files today. I will wait and see if there is any reply to the 10Gb not 20Gb problem, because it may be useful for “cold storage” of (say) backup of a backup. If there is no contact from the vendor though, nor resolution of the storage space, then I think I’ll be bidding Internxt adieu.