Calendar & Clock don't work after installing BytaFont Design
A few days ago I installed the San Francisco Design from BytaFont 2 (which is basically the same as the iOS 9 font and I really love it) on my iPhone 4 running iOS7. But after restarting my iPhone the clock on lock screen is gone and the calendar just shows question marks in boxes and some other apps are also concerned. I already researched about this problem but people claimed that this problem just appears after installing the HideClock tweak from Cydia which I never did. This is the reason why I am registered here. I hope you guys can help me. Thank you very much.
I'm sorry I'm new here but how can I upload my screenshots ?
Is this a good question?