Hi Elliott

Thanks for your prompt reply.
I could fix the title issue by modifying the function.

Regarding the CSS fix:
Is it okay hiding the text using CSS? I checked the webmaster rules and regulations regarding CSS.
Here are the links for your reference:
https://support.google.com/webmasters/answer/35769?hl=en → Please find ‘technical guidelines”
https://support.google.com/webmasters/answer/66353

I have this doubt because hiding elements using CSS might be penalized as it is against the rules. However, I couldn’t find whether it is applicable for the ‘display: none!important;.
Is there any solution for showing only 2 tabs ‘(人気)-popular and (最近)-recent’ by editing PHP or JS code? I have a doubt that, a recursive function might have been used in the PHP or JS file hence the tabs are being added automatically.

Thank you!