I have a 100GB Zoolz account. I would never use it for business. I use it only as a second backup for my music. It's slow as molasses and I am forced to use their clumsy interface tools to upload/download.
I'm not sure how secure Zoolz is as I had a friend whose account was banished over DMRC issues. What was never clear was how they determined this unless they have a listing of forbidden file hashes, or they snooped the content (none was shared). My friend was given no notice or appeal procedure and lost access to all files.
Use only a well-know reputable firm for business storage AWS, B2, Azure, Wasabi... come to mind.