How Do I Upgrade My Subscription?
You can upgrade your subscription at any time by going to the Account page, and then clicking on the "View Upgrade Options" link:
Note that you can choose to pay in different currencies, select from the dropdown in the upper right. The pricing will adjust to that currency:
To switch billing periods (and pricing), click the "per mo/billed monthly/yearly" link to change billing periods (and see the pricing):
After you click the "Upgrade" button you will be taken to the Billing portal where you can enter payment information. Note that you will still have a chance to select and confirm billing period/rate. You can always adjust either the level or frequency later:
We also offer the annual invoicing for individuals and institutions that prefer paying in this manner. Please contact firstname.lastname@example.org if you wish to do that.