Why a product has multiple links and can show under different categories???

[mc12345678]

You are right!!
I activated other templates, and crawl again, no such a cpath problem anymore so the problem lies in my template,
probably its CSS file!

The CSS file just prevents the browser from showing that portion of the menu options. It does not modify the link. The code that generates the menu is what is causing at least that one issue. Should be able to use the developer's tool kit found in the admin->tools menu to narrow down exactly where that menu is generated and maybe fix it.

[sjbglx1]

right, but how about the missing value behind the "cPath="?

for example :

<li><a href="https://mydomain.com/index.php?main_page=product_info&amp;cPath=&amp;products_id=8054">Test bank for Human Biology 14th Mader 9781259245749</a></li> 

if I use different templates, then spider can crawl normally, no longer add wrong values behind cPath.

What file may control that? please guess.

[sjbglx1]

Just an observation when looking at the site page view source and a couple of tools including hitting the site with the Screaming Frog SEO Spider to try and see how the site looks to search engines. So using automated tools and my eyes I find something that doesn't make a lot of sense to me. In the menu below Categories" there is a sub--submenu that has display: none set on it but the urls appear to be wrong, the cPath= are empty

<ul class="sub-menu">
<li><a class="category-top" href="https://solutiontestbank.com/index.php?main_page=index&cPath=38">Anatomy | Biology</a>
<ul class="sub--sub-menu">
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8054">Test bank for Human Biology 14th Mader 9781259245749</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8073">Instructor manual for Campbell Biology 11th Urry 9780134433691</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8074">Instructor manual for Campbell Biology Concepts & Connections 9th Taylor 9780134536255</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8075">Instructor manual for Essentials of Biology 5th Mader 9781259660269</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8076">Instructor manual for Essentials of the Living World 5th Johnson 9780078096945</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8077">Instructor manual for Foundations In Microbiology 10th Talaro 9781259705212</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8078">Instructor manual for Human Biology 14th Mader 9781259245749</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8079">Instructor manual for Human Biology 15th Mader 9781259689796</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8080">Instructor manual for Human Biology Concepts and Current Issues 8th Johnson 9780134312699</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8081">Instructor manual for Inquiry Into Life 15th Mader 9781259426162</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8082">Instructor manual for Microbiology A Systems Approach 4th Cowan 9780073402437</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8083">Instructor manual for Microbiology A Systems Approach 5th Cowan 9781259706615</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8084">Instructor manual for Microbiology with Diseases 5th Bauman 9780134608242</a></li>
<li><a href="https://solutiontestbank.com/index.php?main_page=product_info&cPath=&products_id=8085">Instructor manual for Nester's Microbiology 8th Anderson 9780073522593</a></li>

So you see in the above code the cPath= doesn't have an actual number for the category id. The question is whether or not that is causing the crawler to come back and test numbers in the url?

Thank you again for your thoughts and the kind test, can you please test again for me ? I just fixed one file but since I don't know how to do the above test,
This time please help me to see if the cPath= still missing value.

Thank you!

[sjbglx1]

in the tpl_modules_categories_tabs.php, I modified the line 15 from

if (CATEGORIES_TABS_STATUS != '1') 

to

if (CATEGORIES_TABS_STATUS == '1') 

and that fixed the crawl problem , according to the screaming frog tests.

However, it creates another problem, the category drop down menu stopped working, I post it here in case anybody can help me !

[sjbglx1]

Never mind the second problem, I fixed that by go to Admin > Layout Setting > Categories-Tabs Menu ON/OFF > and set to 1