I have a PS3 and the Ghosts game, but have only been able to create a clan and invite people, I cannot make a clan clan tag or anything the "app" lets you do.
I paid for a PS3 game and it turns out I cannot play this part of the game on my PS3, nor is there any way to on a website or computer application.
If you don't have a compatible phone and can't get it to work on that phone then you may want to consider giving the clan to someone you trust and have them let you be the Lt. Commander and then if and when you get a device you can ask for it back. Be cautious about who you give it to though as there is no guarantee that you will get it back.
It's unfortunate, but that is the scenario we are in due to the lack of compatibility with most android devices (yet it actually works on most of those android devices)