I signed up for a trial account. Once I reached level twenty, I purchased the expansions and downloaded them. I am able to get experience, but everything else says I cannot perform the actions in a trial account.
Limitations on things like chat and mail are not lifted for up to 72 hours after digital purchase, Thefall, though you are welcome to gain experience and level up in the mean time. >^.^<
If you have further questions regarding the restrictions placed on Trial accounts and the delay involved, you may want to check out our related FAQs: