I'm sorry for bumping up the post, but there was no answer with almost 100 views. Could anyone help me clarify this please?

Still getting 21002 even if the status shows the outage was solved. We dont have the app published cause we thought is an error on our side. Go figure. Should I have any hopes the sandbox will work tomorrow? or rather go publish the app and consider the validation is working and they they wil really work after its in production