I have a single mac use license. Does this not have an online browser account?
No. The stand-alone version is completely under your control, the data is not stored anywhere else (unless you set it up to sync with Dropbox or iCloud). At one point limited access using a web browser was possible with Dropbox, but Dropbox removed that functionality (it depended on features that were obsolete) and AgileBits regarded the option as insecure anyway.
For web access you need the new subscription option, where data is kept on servers under AgileBits control, so the interface is secure.
Hey @arkonis! Single licenses do not include accounts, as danco mentioned. You're welcome to continue using your license as you always have, or sign up for an account if you'd like the benefits it includes.