404 error for product page - friendly urls

[linderox]

Everything works well and I had friendly URL on my website until I tried to work with Advanced SEO plugin.

After changing some titles things I got 404 error for products. Even after removing it from module I get the same issue.

For catalog and other pages everything works fine. Only product pages got this issue.
Cache is off

Switching to debugging mode with switching off all 3rd party plugins doesn't help me to solve this issue.
Do you have any ideas how to treat this?

Here is a link to some page that give me 404 error

http://buy.guinot.su/ukhod-za-kozhej-v-oblasti-glaz/258-hydrazone-yeux-intensivnyj-uvlazhnyayusshij-krem-dlitelnogo-dejstviya-dlya-oblasti-glaz.html

here is how it looked like - from google cache. It is the same url no changes
http://webcache.googleusercontent.com/search?q=cache:_MajRol4sFAJ:buy.guinot.su/ukhod-za-kozhej-v-oblasti-glaz/258-hydrazone-yeux-intensivnyj-uvlazhnyayusshij-krem-dlitelnogo-dejstviya-dlya-oblasti-glaz.html+&cd=1&hl=ru&ct=clnk&gl=ru

Edited February 1, 2021 by linderox
UPD issue (see edit history)

[linderox]

Maybe any ideas?

[Prestachamps]

Hi, 

After a quick test, is thi the correct working URL of that product? 

http://buy.guinot.su/ukhod-za-kozhej-v-oblasti-glaz/258hydrazone-yeux-intensivnyj-uvlazhnyayusshij-krem-dlitelnogo-dejstviya-dlya-oblasti-glaz

If yes, than your Url format is different  from the one that you've sent, so most probably on your Seo&Url page thes can be changed(I am not sure if this will help, but you can do a backup of DB, then try to solve the product url rule) 

As I see it, it's missing the. .html at the end and the - after the product Id. 

Kind regards, Leo