Hubble has been having issues for a while now - its payload computer (the bit that powers all the science) was playing up, and rendering it rather useless. There's a backup computer on board, but the process to switch over to it has not really been done before, and so it took a lot of prep work before they were ready to go - you can't just pop up there and fix it if you break it.
Fortunately, not only have they managed the switch to the backup computer, they also found what the fault was on the original one. Of course, it's not really possible to fix the broken computer - Hubble was very much designed around the Space Shuttle, and with it retired, there's no way to spacewalk out to it in orbit and bang it with a hammer.
Still, Hubble has been doing amazing science for three decades after a rather rocky start with its mirror problems, and its successor, the James Webb Space Telescope, has been delayed again and again. Fortunately, it seems like the JWST might finally be on track to launch this year.
After Blue Origin made a big press event of auctioning off the final seat on their first crewed mission - that will poke just above the Kármán line, unlike Virgin Galactic's recent launch - the anonymous winner of that auction has decided to pull out due to a "scheduling conflict".
Now I'm no millionaire and I'm nowhere near being able to buy a seat on a space flight, but it does seem a little odd to splash out US$28 million to be on the very first crewed flight of a rocket and then... not go on it. I get many reasons not to want to be on the first one, but being too busy is a new one on me.
I hope whatever they're doing instead is absolutely enthralling, and they've made 18-year-old Oliver Daemen very happy as he is the substitute passenger on board the first flight, after being bumped up from the runner-up spot in the auction.