Category URLs returning 404 despite being correctly configured

Hello, This is Sunyoung and below I attached is,,the translation I used by ai and what I did assisted by chatGPT.
the mentioned 3 categories were working fine yesterday( I know because I check the schema category code if It opens well) but they are showing as 404 since this morning.
below is what I did with an assistance by Chatgpt.

Category 404 Error – Troubleshooting Summary & Steps Taken
🛠 1. Issue Description
🔹 Date Issue Started: March 18, 2025
🔹 Issue:

Three category pages are returning 404 errors despite having posts inside them.
These categories were working fine before, but after recent changes in Rank Math settings, they are now returning 404 errors.
🔹 Affected Category URLs (Currently Returning 404):

https://yourlifesupport.com/category/2025-baby-parent-benefit-support/gov-basic-welfare/
https://yourlifesupport.com/category/2025-baby-parent-benefit-support/other-grant/
https://yourlifesupport.com/category/2025-baby-parent-benefit-support/single-parent-family-support/
🛠 2. Steps Taken to Resolve the Issue
✅ 1) Checked Rank Math Settings & Adjustments
✔ Disabled Noindex setting for the affected categories and saved changes.
✔ Checked category redirections in Rank Math – no conflicting redirects found.
✔ Reviewed Rank Math’s auto-generated schema & metadata for these categories.

✅ 2) Flushed Permalinks in WordPress
✔ Navigated to WordPress → Settings → Permalinks → Clicked “Save Changes” (without modifying settings).
✔ Tested the affected category pages again – 404 error persisted.

✅ 3) Reviewed .htaccess File for Conflicts
✔ Checked .htaccess file for any rewrite rules affecting categories – no category-specific redirects found.
✔ Default WordPress Rewrite Rules are intact.
✔ Breeze Cache & Rank Math-related rewrite rules were added.
✔ No explicit rules blocking or altering category URLs.

📌 Test not yet performed: Reverting .htaccess to its default state and testing again.

✅ 4) Cleared Cache & Server Cache Reset
✔ Cleared Cloudways Varnish cache.
✔ Deleted Breeze Cache plugin cache.
✔ Cleared browser cache and tested again.
✔ Issue persists (category pages still return 404 errors).

✅ 5) Verified Category Data in WordPress Database
✔ Checked wp_terms table – affected categories exist with valid slugs.
✔ Checked wp_term_taxonomy table – Parent ID and count fields are correctly populated.
✔ No signs of corruption or missing category data.
✔ Category count is nonzero, meaning WordPress recognizes that posts exist within these categories.

✅ 6) Checked Rank Math 404 Monitor for Logs
✔ Rank Math 404 Monitor logs show the affected category URLs as 404.
✔ No auto-redirects or forced URL changes recorded.

🚀 3. Current Conclusion
📌 All standard troubleshooting steps have failed, suggesting a possible conflict with Rank Math or another SEO setting.
📌 The database confirms that the categories exist and are not corrupted.
📌 The .htaccess file may still be a factor, but before resetting it, I want to verify with Rank Math support.

📩 4. Questions for Rank Math Support (To Be Answered by an Agent)
1️⃣ Could Rank Math be automatically modifying meta tags or robots.txt settings, causing indexing issues with category pages?
2️⃣ Could any of Rank Math’s .htaccess modifications or redirect settings be interfering with category pages?
3️⃣ Is there any possibility that Rank Math is automatically setting certain category pages to noindex?
4️⃣ Could Rank Math’s SEO features be conflicting with WordPress’s permalink handling for categories?
5️⃣ Is there a way to manually reset Rank Math’s SEO data for specific categories to resolve this issue?

📌 🚀 This report summarizes all troubleshooting efforts. Please provide guidance on how to proceed next!
📌 Once I receive a response from Rank Math support, I will follow up with additional information.