Thank you, David. You're quite right to caution me against throwing out the proverbial baby with the bathwater in this instance. I completely concur that the desktop version is an amazing product, it would be rash to swear off using it based on this experience alone. But given that I had already had some (albeit relatively limited) experience with the desktop version, I already knew that Wolfram were capable of producing exceedingly high-quality products, I think that I was more frustrated by the apparent lack of customer support on their part. They did, however, eventually get in contact with me, so it turns out that I was just being a tad impatient.
