Sorry, I can’t do it the way I need according to your instructions.
I’ll ask you a different question.
I want to make a multisite on WordPress with subdirectories: plantaboost.com/es and plantaboost.com/ru
I have experience creating a multisite on a WordPress theme with two languages using the platinum Multisite Language Switcher
After installing and configuring platinum on both sites, you need to place the html code in the site header, after which flag icons appear in the site header to change / switch to another language / site
Is this possible with your theme?
Thank you.