Hello J. Jesús Vaca Ruelas,
Thank you for reporting this issue, and I apologize for the inconvenience it's causing you.
To help me investigate the "Object Of Class StdClass Could Not Be Converted To String" error, would you be willing to grant me temporary administrative access to your site? This will allow me to examine the configuration and identify the root cause.
Before providing credentials, I highly recommend creating a full backup of your site to ensure the security of your data.
Looking forward to your response.
Best regards