Failure of Modules under the product page.

-- HikaShop version -- : 2.6.3 Business
-- Joomla version -- : 3.5.1
-- PHP version -- : 5.6.12
-- Browser(s) name and version -- : Edge 25.10586

Hi,
I want to describe the Problem in 2 steps:
step 1 is the Situation before (when it works)
step 2 is the Situation afterwards (when it does not work any more).

step 1:
Content Modules under the product page (for instance best sellers) are displayed well, almost everything is fine, except the issue that I want to translate the module Header on the site and that I want to add a tag id for certain css handling. this is the reason why I have to Change the relevant module (in this case the Content module "Best sellsers" with id 100).

step 2:
as soon as I do any Change on this module, for example Change the title of best sellers module or change Header tag and finally save it of Course. Then this module is not displayed any more under the product page.
what is goiing wrong?

I found out something more, maybe this helps you to offer the appropriate solution:
Somehow the module ID 100 seems to be relevant. I saw also in the backend a red error message that module ID100 is not accessable, but I do not remember where I saw this. I compared the DB before and after this Change and there were several changes in a table called assets. What is this table for? I have the Impression that my "Save" Action on the module breaks a link in the DB and this is the reason why not to Show this best sellers Content.
I attached the modified tables as SQL dumps so that you can identify what the System did.

you were right, It was really some Settings in the HikaShopOptions Tab which were set wrong. It works now
Thank you