Login language redirection

-- HikaShop version -- : 2.6.1
-- Joomla version -- : 3.6.4

Hi
I know, my version is relatively old and we should upgrade, but we have some other issues to solve before we can do that.

For now we have a problem with login. Joomla Login from the front-end is redirected to Hikashop Login. I use the Remove URL Language Code in the System - Language Filter Plugin. But the Hikashop Form adds action="/en/" and that page doesn't exist, which means customers aren't happy of course...

How do I remove the /en/ action from the form please?
Thanks
Bob

Thanks Jerome
I can fix it by switching off Language Filter Plugin, sure and that solves the problem (but creates others).

That Plugin has an option to remove the URL language extension from the URL, and when selected does its job.

But in the Hikashop Login module, the Form Action does add the Language Extension, unless the login is called from a page which is not the Home Page. The Language Filter does not seem to strip the language extension from the Form Action when called from the Home Page, at the site root URL.

It's as though the Hikashop module is called before the Language Filter Plugin.

Understood.
The problem lies with the Joomla Language Filter and I will explore there to resolve. Thanks for pointing out the relationship between Joomla and Hikashop login. Hikashop login updates Joomla Login and creates a Joomla User at Checkout, but not the other way around - got it!