The eBay access token grants 3Dsellers (third-party eBay tools) the ability to access your eBay account.
- eBay requires tokens be 'refreshed' or re-activated every once in a while.
- The easiest way to keep your token active, or if yours has expired, is to sign into 3Dsellers with your eBay account.
Direct sign-in link: https://platform.3dsellers.com/auth/ebay/login
You can view your active tokens on eBay though My Account in Site Preferences under Third-party authorizations: