You can't upgrade from the Spyder5Elite. It's the best there is. But yes, the monitor could be better.
Can you elaborate on this? What's wrong with them, exactly?
You mean these instructions?
Please do this. Follow it all the way to the end. Let me know the outcome.
Sorry, it's impossible. Even if it was possible to calibrate a phone screen (it's not), you couldn't possibly visit the homes of every single person who visits your social media, to calibrate their phones for them.
All you can do is make sure you've followed best practice for web photos, and then chill out.
Can you tell me about this error message? Or even better, screenshot it for me?