What does this message mean?

Thank you for your prompt reply.

I recently asked a specialist to check my site to speed up my shopping mall.
He told me that it would be better to remove unnecessary plugins among the plugins installed on my site, and in the case of Variation Swatches for WooCommerce, he told me that it could be a problem.
So I left ‘Variation Swatches for WooCommerce Pro’ and removed ‘Variation Swatches for WooCommerce’, and the Variation function was not working properly.
I inquired with Getwooplugins and received a reply that it works properly only when Variation Swatches for WooCommerce Pro is installed.

So I reinstalled the ‘Variation Swatches for WooCommerce’ plug-in to my Woocommerce, where the ‘Variation Swatches for WooCommerce Pro’ plug-in is already installed.
Then my website went down and it didn’t work.

When I disable Variation Swatches for WooCommerce Pro plug-in, my site works normally.
I have used your plug-in to register many products as Variation products so far.
What should I do to keep your plug-in working normally without losing these Attribute information?

Hi Hakik,

As you said, I disabled YITH WooCommerce Delivery Date Premium, and the site is not down.

However, there are still product’s links that cause an error called ‘HTTP ERROR 500’.

The links below are those with no problem with English pages, but ‘HTTP ERROR 500’ errors occur on Arabic pages.

https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/the-best-liquid-foundation-laneige-skin-veil-cover-foundation-30ml/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/clio-super-proof-brush-eyeliner-0-55ml/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/the-best-liquid-foundation-laneige-skin-veil-cover-foundation-30ml/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/matte-foundation-hera-black-foundation-spf-15-pa-35ml-2/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/perfect-cover-concealer-hera-black-concealer-spread-cover-2/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/laneige-silk-intense-lipstick-3-5g/?lang=ar

The links below are the ones that cause ‘HTTP ERROR 500’ errors in both English and Arabic pages.

https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/best-layer-lipstick-laneige-layering-lip-bar-1-9g-2/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/best-eyebrow-fixer-laneige-eyebrow-cushion-cara-6g/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/eyeshadow-palette-hera-shadow-duo-4g/?lang=ar
http://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/best-concealer-for-spot-hera-black-concealer-dot-cover-2-2/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/best-layer-lipstick-laneige-layering-lip-bar-1-9g-2/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/the-best-tint-laneige-tattoo-lip-tint-6g/?lang=ar
https://www.kbeautyforarabs.com/%D8%A7%D9%84%D9%85%D9%86%D8%AA%D8%AC/the-best-lip-gloss-missha-pearl-in-love-gloss-5-3ml-2/?lang=ar

And do I have to disable the YITH WooCommerce Delivery Date Premium plug-in continuously?

I bought your Variation Swatches Pro plug-in because YITH’s Variation didn’t work properly.

I hope this problem will be fixed soon.

Thank you.