I wrote a python script several years ago that uses the selling API to get listings - this info is then used to match up inventory against the Ebay listings, to make sure we don't have more of any item listed than is in the inventory, etc. This used a developer id, application id, and certificate id. I needed to regenerate the certificate id every few years, but this has been working well for about ten years.
Now I need to update to use oauth2. When I generate a user token it gives me one, but the expiration date is just two hours from now. Is there any way I can get tokens so my script works the way it did before, or will we need to log in to Ebay every two hours to get a new token?