terng

The new version works well.
Thank you. ??

I tested changing the varchar length and found out that my varchar use 3 bytes per length. The collation of the fields are utf8_unicode_ci.

It will be possible if I changed to varchar(140) for post_type and user_role. Do you recommend doing this?

I got the same error as @disconance.

The file wp-admin/admin-post.php is still there.
.htaccess is the same as default one.

I tested on a newly WordPress installed site but the problem still remain.
So I think that there some settings or versions of my hosting that does not compatible with your plugin.

haven’t solved it yet.

Maybe hooking some code to check the availability of stock before picking related items will help but I don’t have time to do that.