Odoo mixing up users.

I find similar post that have the same problem but does not have clear problems.

Anyone can help?

https://www.odoo.com/forum/help-1/having-and-issue-that-user-automatically-switching-to-another-userin-odoo-13-192378

https://www.odoo.com/forum/help-1/users-reporting-when-the-login-it-shows-them-as-a-different-user-212174?fbclid=IwY2xjawLPWXdleHRuA2FlbQIxMABicmlkETFjQXZqb09BMVBMQVJlOVhyAR7QGOoURTdDjl_g4tRWO-aO9l4NALzakXcLrxHG0_c0qFDFC_xj3KAQ9a-okw_aem_EUXiwEqn0_MsFcGPjUQbWw

https://www.odoo.com/forum/help-1/user-session-bug-odoo-mixing-up-users-144653