The Provoscooter store and forum have been rather disjointed their entire life. We were recently able to upgrade the website to allow single sign on between the forum and store accounts. If you would like to link your two accounts, simply log into your store account, click on "my account", then select "forum integration" from the side menu. You will be prompted for your forum user name and password. After you save your credentials, your accounts are linked. After your account is linked, your store account will look something like the image below.

Store-Forum Integration

It appears that logging into the store logs you into both the store and the forum, but logging into the forum doesn't log you into the store. Logging out of the forum or store, however, will log you out of both. In the coming weeks the site will undergo a visual makeover to further integrate the site.