Seems base url is wrong because sometimes links go to odoo instead my own domain when relative urls.
For example, when Odoo create a URL to a CRM opportunity, if you try to enter: [login to view URL] it redirect to: http://odoo/web#view_type=form&model=crm.lead&id=179&active_id=179&view_id=419
That no exist
Or try to make an appointment here: [login to view URL]
After click on Enviar, goes to a wrong URL too like: http://odoo/online-appointment/appointment-scheduled?appointment=222
Please, only bid if you're agree with price and you can do this job