bug on the phone, it doesn't show well, it shows sider together in the category where you enter and I don't know how to solve this problem 

13 - good 

14 - no good 🤣🤣

Edited December 4, 20231 yr by Madutu
Photos

Does this happen on a default/unmodified theme?  This looks to be an issue with your specific theme and would be something you would need to work with the author regarding if it does not happen on a default theme.  

The default theme does not have something like this added to the sider, but I will try to add this script to the default theme

If the issue is only with a script you are adding, you would need to contact the author of that for assistance.

He retired and I don't know how to do this update myself

There are various third party resource providers who can assist with troubleshooting custom themes. 

Take a look at:

https://invisioncommunity.com/third-party/providers-directory/

3 hours ago, Cristi Tipu said:

He retired and I don't know how to do this update myself

This being the case, you would need another designer to assist you with this. As mentioned above, there are many providers out there who offer design services, so it would be worth looking through