We updated automatically all guilds on your server and your guild still isnt on the list, that only means that your guild does not meet requirements for this type of update.
- automatic update by wow-heroes :each guild need to have at least 5 guild members that got requested achievement at the same time /date for 10 man instances, and 15 people for 25 man to be accounted for guild progression (verified by achievements,updated every 3-5 days)
And there is another way:
- manual update by guild master/officers: same as for automatic update ,or each guild need to have at least 10 guild members with requested achievement done for 10 man instances, and 25 people for 25 man to be accounted for guild progression (also verified by achievements)
If your guild meet requirements for manual update,you can find more info how to do that
here