Again Paypal Invaild response

-- HikaShop version -- : 2.6.4
-- Joomla version -- : 3.6.4
-- PHP version -- : 5.6.27
-- Browser(s) name and version -- : Firefox 50.0
-- Error-message(debug-mod must be tuned on) -- : Paypal Invalid response

Hi,
I have again a problem of Pyapal invaild response?!
It happens in last september, the pb came from Admintools (configuration to complicate so I had in september deinstall Admintools) From this time no more problems.
Since this late afternoon pb of "Paypal invalid response" came back. I didn' make any change since the last ok command (no any update or installation)???
Thanks for your help

Hi,

Are you able to reproduce the problem ?
If you turn on the "debug" setting of the PayPal plugin it will provide important information about the issue when you look at the payment log in the HikaShop configuration after the next PayPal payment on your website.

Thanks for your answer,
The pb is that my Paypal log file is empty !
Here from the HS config :

And here from the ftp :

I don't know neither understand why?
Ps : I had the same pb in september, solved by desactivate Admintools...:
www.hikashop.com/forum/payment-methods/8...e-paypal-solved.html
The pb came back yesterday, I desintall Admintools and...I see on my ftp root an .htaccess.admintools, can it be a source of my pb?
Thanks in advance...

Hi,

The htaccess on your root could be problematic yes, but not the one in the safe folder that you have in your screenshot.
Also, I invite you to check the points and follow this documentation:
www.hikashop.com/support/documentation/i...or.html#notification
It should help you find the root of the problem.