Hello Kihra,
as WoWer with Chinese BattleNet account, it seems that I have problem to import my Guild’s members’ characters. Our Guild is https://www.warcraftlogs.com/guilds/characters/152521/
As it shows below, to “click here" for the next step: 
While it appears: 
Therefore, I tried browse other guilds from China which shares the same server “加基森(CN)” as ours. The results is not very promising. Some of guilds has imported thier members successfully, some not.
Example 1: https://www.warcraftlogs.com/guilds/characters/13992/
Example 2: https://www.warcraftlogs.com/guilds/characters/14967/
In the beginning I thought due to our guild’s name is in Chinese, it will have problem to import members’ characters. But, as the above two examples, even the guild’s name is in Latein, as example 2, there is problem to import members’ characters.
In addition, I gave the permission to WarcraftLogs: 
(sry, only Chinese version)
While still have the problem even import my character as to fulfill: 
Nothing happened/changes, after I “Click here”.
Any idea how to solve this issue? I tried your suggestion under http://forums.combatlogforums.com/t/unable-to-import-characters-from-battlenet/479/2?u=hamm
Still doesn’t work.
There are so many Chinese WoWer, I belive they suffer the same problem as mine now.
Pls help us to be able to import our guild members’ characters to WCL, which is also good for WCL to attract more Far East players and enlarge WCL’s datadase.
Thanks a lot in advance.
Hamm