Can't login to the front page

-- HikaShop version -- : 2.5
-- Joomla version -- : 3.5.1
-- PHP version -- : 5.6.22
-- Browser(s) name and version -- : Chrome 52
-- Error-message(debug-mod must be tuned on) -- : Hi all,

I can't login to the website, it shows blank page with only words: invalid
what can I do now? Thank you very much.

Hi all,

I can't login to the website, it shows blank page with only words: invalid
what can I do now? I tried two users they are all activated, but both don't work at the home page login columns. Thank you very much.

Hello,

1. Can you download the last Hikashop version through our website, install it and test it again ?

2. If it still doesn't work you should :
- Activate the Joomla debug mode ("Administration->Global configuration->System->Debug System/Language")
- Set the "error reporting" option of the Joomla configuration to "maximum"
- Test it again so that you can see if it display an error message which will help you to understand from what your issue is coming.

Hi Mohamed,

I do both, but it doesn't work and there is no error shows up. My web hosting engineer said she and their colleagues can login though. Do you know why?

Hi Nicolas,

I've found its the caches problem.
I have disabled cache ( Conservative cache OFF) and cleaned cache in the backend Joomla global configuration. When the same user login the first time after cleaning cache it is successful and failure the second time. I clean the cache again and login successful again and fail the second time once again.

So someone on the forum suggest doing a clean and new configuration.php file. I don't know how to put my in those codes. Do you know which info to change? Or you have other solutions? Thank you very much.

Thank you so much, Nicolas, for doing something not relevant to you.
Now I have new problem, I didn't check before asking out the previous problem but the new register/user can't go to the page called " please check your email to validate". This page is missing address and not found. The back-end shows the new user has registered, though the validation email isn't sent at all. Do you know how to solve on this? Appreciate your help.

Thank you, I found the solution here:
www.hikashop.com/forum/checkout/883603-4...-process.html#235445