Many bugs after updating hikashop to version 3.1.1

-- HikaShop version -- : 3.1.1
-- Joomla version -- : 3.7.2
-- PHP version -- : 5.6.X
-- Browser(s) name and version -- : Firefox

Hello,
We are NOT really happy with the new update of Hikashop Business!
We have a test-site with Hikashop version 2.6.4 and an exact copy with Hikashop 3.1.1

In the PDF-attachment the following bugs we encounter:
1. The appearance of “My account” is totally a mess
2. The custom fields in the checkout are not displaying anymore
3. The backend setting of the custom field are changed!! (and we have a lot of them)
4. And of course are the custom fields also not showing in the frontend
5. The Wistlist… sorry, too many to mention….

And there is MORE…
This video is showing that the filtering is working on the 2.6.4 version.. and not anymore in the 3.1.1 version: wetransfer.com/downloads/890a99f19a6a250...0170614130010/9d493c

We are running several Hikashops for our customers... and an update like this is NOT an option... hope to hear from you as soon as possible.

Regards,
Mark

1. The change you see is caused by the custom CSS you have. In the HikaShop configuration, under the "Display" tab, change the frontend CSS file to "default" and that should help. It's also possible that the CSS issue comes from the template CSS so it might require some further modification. In that case, please provide a link to the account page and a test user account so that we can look at it.
The change can’t be caused by the custom CSS changes we made, because we did not changed the look of the account… only some text. So this is really a bug in the new Hikashop version. This issue is on every site even the most basic hikashop configuration.

2. 3. and 4. We've completely changed the display settings of the custom fields in order to be more fine-grained and clearer. Edit them via the menu Display>Custom fields, and check the display settings so that they are like you want and save them. That should be enough.
The change of the display settings of the custom fields are fine and clearer but after update is this giving us a lot of work cause we now have to set all our customershops in the right settings. Because now have to reset all the settings in every webshop after updating to this new version.

5. The wishlist interface too has been completely redesigned. The modifications on the cart system were too important to keep the compatibility with the old views so we had to change the view being used there. So your customizations are not taken into account as you could see. You'll have to redo your customization to the new view file if you don't want the default display.
This is a big change after such an update and we are not happy to do all the customization again. It also gives a lot of work to set it right. I Do not understand why these things are not taken into account.

6. Regarding the filtering, it looks like a double problem. The URL /producten-diensten/uitvaart-pakketten/product/listing on your website is not valid. Apparently, the link was working with the default settings of the HikaShop configuration before even though it was not a standard behavior. The issue is actually that the filter module shouldn't change the URL of the page when applying the filters, or it should redirect to a products listing page which displays all the products and in your case you have neither behavior.
So I'm feeling that the issue might come from a view override of the file "filter" of the view "product" which might have some old code to handle the submit of the filter form. Check in the Display>Views menu if that view file has an override and if it does, try removing it (after saving your modifications of the view file). That should hopefully be enough to fix the problem. If not please provide a screenshot of the settings of your filter module.
The problem that you mention is AFTER the update. The filtering was working perfectly and we did not made an override in the view of the file “filter” of the view “product”. So that the filtering is not working properly any more is really a problem after the update.