Your content was suspended when your watch face seller partnership was revoked. You can not modify the content or upload new content until you are approved as a watch face seller.
Suspended content is still available for download from previous buyers but is not available for purchase.
Regarding the font size. I understand you should be able to increase the size in your browser settings. I recommend downloading the guides for off line reading prior to uploading content.
If you don’t understand the reasons for the revocations of partnerships or yours in particular please feel free to open a support request and ask that I be assigned and I can get the specific details for your account.
Samsung Developer Program