It isn’t working if you are getting 24 hr downtime. If this limit is new then it’s just another way they can keep the service targeted towards it’s intended use. This service is targeted and advertised as being for document storage and occasional retrieval, you are trying to use it more like (much more expensive) cloud block storage, if you can get it to work you should be quiet about it and enjoy it while it lasts.
If there is a per account bandwidth limit, then paying the enterprise cost won’t help, if it’s a per TB bandwidth limit then it might. Either way, you will be made to pay more eventually to get the kind of service you want.