Hello,
I am having the same problem – my categories throw 404 pages. I’m guessing it’s the perma links as I’m pretty sure I added 3 categories before setting the permalinks OR I set them once or twice, switching back to the default in between before getting them to work. Chalk it up to being brand new to WP and standing at the beginning of the learning experience.
I’d be willing to reset them to default again, but in the mean time I’ve added a number of pages and posts. What I would like to know is, if I reset to default, what happens to the existing posts and pages when I set them back to my permalink choice? Aren’t they all going to then be dead links like the categories are now?
One more question, when resetting them back to permalinks, must I use the same permalink choice as I used before resetting to default?
I am using these instructions for my permalinks:
https://www.emilyrobbins.com/how-to-blog/how-to-configure-wordpress-to-create-search-engine-friendly-urls-for-permalinks-242.htm
To go along w/this I had to use the copy/paste method regarding the .htaccess file for the permalinks as I apparently did not have the .htaccess file chmod’d correctly before doing this. I later found instructions for this but still need to actually do it.
Thank you for your help.
MC