How to update data on MT4

Hi,:slight_smile:

I have downloaded Metatrader4 two months ago.
All the time frame are not updated. Why?:mad:
When I trie to download the data from the “History center” I don’t get any data.
The serveur are “MIG DEMO” or “ODL-MT4 DEMO”.
How is it possible to update the charts?
Thank you!:slight_smile: