I've uninstalled & deleted as much as possible and I'm still getting messages that I don't have enough space. I've purchased more space for storage and continue to get the same message. Can anyone help?
You can't "purchase" more internal storage space for your phone, unless you mean you bought another phone that had more internal storage. Or are you referring to cloud storage? If so, Microsoft?
You need to move some items over to the SD card, But check your 'trash' when you go to analyze storage. When you delete something, it gets held for 30 days basically like the recycle bin before it's permanently deleted. You can also opt out of having deleted items held as well.