N73 Problem - Feature Not Supported

Hi I had to have my newly purchased n73 fixed at a nokia repair centre yesterday after trying to update via pc suite & the phone died. They repaired the phone & updated to the latest firmware for my n73, v4.0747.31.0.1. I'm with the free mobile operator Blyk & with them I need to have there correct settings on my phone to allow me to use the network properly, I've had the settings sent to my phone from them in 3 seperate sms's. I'm trying to open the sms's to save the settings as default, but I'm unable to open them. When I try to I get the message popup saying "General: Feature not supported" I've tried formatting the phone with *#7370# & *#7780# but I still get the same message when I resend for the settings to be sent to my phone. I also reinstalled the current firmware for the phone myself using nokia pc suite, but again still the same message when trying to open the sms's. I really don't know what is causing this problem, I've never had it before on any phone I've used in the past or never seen it before on any of my friends phone's. Would be very greatful if someone could help me out with this problem.