I have a problem with...(I don't know exactly)


My site was fine just a few days ago and now there is a issue that is not very huge, but I would like to fix it.

Some of my category pages are fine, but others show something like that on browser tab:

Usually it shows there category name and site name, but it shows something like that on almost all category pages. Maybe this is caused by SmartCrawl plugin? I have also installed other plugins lately, so I don't really know which one of those is causing me that issue.
Support acess is granted for my site which starts with k. Maybe you, WordPress heroes, can help?
Two links to for example:
Here is everything normal
Here is the issue visible what I just described

Best regards