@Jose_Alberto_Magana
i think I might know the issue. (not really sure because I am not on the server side to run diagnoses)
the first issue (error 503) means there is an error either by nginx or supervisor, run the following commands please:
bench setup nginx
bench setup supervisor
bench setup mysql (not sure this will work or not but it should…i think)
service nginx restart
service mysql restart
service supervisor restart
if you are lazy to copy paste all of them then use this:
bench setup nginx &&bench setup supervisor && bench setup mysql && service nginx restart && service mysql restart && service supervisor restart
P.s: again, I use I think or am not sure because I am not on the server side and just reading what you experience.