if you send a pm, be sure to send it to BOTH yellow swordfish and mr papa… and be SURE to link back to this topic…
from your video, I see nothing wrong…
you have mapped new members and user with role of subscriber into the subscriber usergroup… if you want them in the members usergroup which you said is what you wanted… dont confuse wp role with usergroups… the mapping is to take a user with a specific wp role and move them into the selected usergroup…
you said the only wp role you are using is subscriber… and you have it mapped to a usergroup called subscribers… so all your users are in subscribers… thats correct per your settings… in the dropdowns, dont pick the wp role, pick the sp usergroup you want them to go into… and for the default, if you want new users to go into members, change the mapping to members, not subscribers… its quite odd to create a usergroup with the same name of the wp role, unless you are going to give each of those roles distinct and different permissions… if you are not using any of the wp roles, then just map them all to the members usergroup if that is where you want users….
so yeah, mapping looks like working as expected, but you have the settings for the usergroups to map a wp role into wrong…
as to the blog linking question… you showed me the permission set that had the right permissions, but you didnt actually show if the permission set was in use… in order for a permission set to be used, you have to marry up a user group and a permission set to a forum (or forums)… that applies it…
but the real issue there is I believe your misunderstanding of blog linking… yes, it takes a forum topic you create and makes a wp blog post out of it too… but that is key… its creating a wp blog post…. in order to use the blog linking, the user MUST have wp role that allows it to publish posts… we do not circumvent the wp security and capabilities for posting… typically, the user must have wp role of editor or author to get publish post permission… there are plugins that allow you to give that capability to any role though… in the video you showed a use with wp role of subscriber wanting to do a blog link topic… they wont have wp permission to publish posts…