Maintenance for the week of March 2:
• [COMPLETE] ESO Store and Account System for maintenance – March 3, 9:00AM EST (14:00 UTC) - 12:00PM EST (17:00 UTC)
You *should* be able to change subscription plan at any time, though sadly I'm not certain of that as I've not yet been able to redeem my game codes (Imperial Edition, broken statue, returned to retailer for replacement) so I haven't been able to set up a subscription yet.
Elder Scrolls gaming since November 2002 (Morrowind, Oblivion, Skyrim & Elder Scrolls Online)