Foremost, title of your topic is strange than you said inside subject.. so according to your title "we are not allowed to change any Titan rings" and According to what you said in your topic which refers to "upgrade titan Rings" is working and there is no thing wrong with it and let me explain you some thing " you had bought 2x prem scroll in 21/09/2016 to upgrade your dual (Riomas) which they are including (Club/Dagger) and inside your (inn page 1)......SO..
Upgrade titan rings is working and we cant change any titan rings to any ring will be... you didn't have 3x prem scroll as i had explained above...