Hi,
sorry for late reply, it was a weekend for us

You can't filter options, but you can create 2 different select fields and manage this with conditions.

for example:
Main Select fields options:
a|Option 1
b|Option 2

Main Select conditions:
1. If equal to custom value "a" show Select A
2. If equal to custom value "b" show Select B

In Select A you will have options like 1,2,3,4,5
In Select B you will have options like 6,7,8,9,10

This should be already fixed in the latest release, but maybe you have a template override for profile page.

- If you have old version, you can update to latest
- If you have template override try to rename or remove file at /templates/your-template-folder/html/com_jsn/profile/default_fields.php

Have you checked if you have some template overrides?

Hi,sorry I not understand, was present a template override? if yes try to remove it. you need to delete the file at /templates/your-template-folder/html/com_jsn/profile/default_fields.php