Hi Gabriel,
Thanks for the detailed help. I did everything as said and the problem with the cart page was solved! This was the problems that had me worried.
I still have the blue button asking me to update the database, but as long as the database is ok and it is as Woocommerce and the database are 5.1.0, I can live with the blue button no problem.
Thank you so much for your help.
Regards,
Alejandro Ahumada.
https://www.ahumada.es