[Outfit Changes Every Time I Teleport to a New Map]

It is an option but it's not supposed to change on its own or when you swap maps.

[Error 108 when trying to purchase SOTO]

Similar problem in that it is related to the purchase of the new xpac. I was playing through the new story, then when I was trying to enter a story instance, I had the green story star (only after relogging, it was just a swirly thing at first) but no prompt to enter.  I checked my story journal, it shows what I completed but it's locked! It's telling me to purchase the xpac.
So I checked my game account, it's also saying that I need to buy the xpac, which I purchased last week! I've put in a support ticket, hope it gets resolves soon.

[WvW Has lost a great Commander and friend]

My condolences to all. Thankyou Anet for that beautiful tribute. I remember his name and following him a few times. Though he may be gone in body, his soul continues on and the love he shared whilst living remains. Rest in Peace Canis. <3 <3 <3