Hello Steven,
I am sorry but the API we use to generate thumbnails (thumb.io) might have a cache of their own. Unfortunately, we do not have control over that so you must allow it some time to clear. Or, use other tools in the meantime to check mobile thumbnail if you are concerned.
Hope that helps and please do not hesitate to let us know if you need our assistance with anything else.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.
