After several warnings from you we found that Windows Phone Shop is suffering problems preventing the update and / or downloading applications and shows us the error 805a0193. Currently we are not aware that Microsoft will hear from this error, but we hope that soon they know and resolve.
Update: Once the fault is confirmed globally, we have confirmation that Microsoft is aware of the problem and is working on a solution, hopefully we can soon regain access to the shop.
2nd Update: We've found that seems to have solved the problems but we had to restart the terminal were to go to downloads, it is possible that in some regions but still may have problems should be resolved shortly.