Hello Peloba
10 Years of usage of a SD card is very long, of course a SD card has no mechanical parts but a SD card has an electronic wear and tear during use.
The degree of wear and tear can be read from the camera’s info page by the “Flash Wear” value or problems with the SD card appear in the system messages.
This info can be found in the camera info menu. either by clicking at the 
button or
http://cam-ip/control/camerainfo
in the section File Server /Flash device.
If the SD card is clearly overused, please replace the card. The corresponding recommendations for SD cards are listed here:
How to change the SD card is described in this thread: