So I just upgraded to the lasted 3CX service pack for Version 11. There are some really strange behaviours: (a) Buttons have changed color on my CISCO SPA 500 phones; I have green and orange buttons illuminated where in previous versions they were always. Actually, I wish I could cause them to go dark after a time out phase, but right now, I have no clue what the button colors mean. (b) I can not program my buttons! The configuration page is greyed out and I cant change BLF? The buttons have different extensions on them and I want to change them and cant.