Only display certain use options

I’m sure we can make that work.

Would it be sufficient to simply disallow subscribers access to the plugin settings or do you need to specify access on a more complicated per role base?

A plugin like Adminize could help you with enabling/disabling (parts of) the dashboard based on user role: https://ww.wp.xz.cn/plugins/adminimize/

Ah, so what you need is something you can put in the custom profile.

The plugin stores it’s setting in user_meta key ‘use_opendyslexic’ the accepted values are:
‘no’ (font disabled)
‘yes_everywhere’ (font enabled everywhere for this user)
‘yes_websiteonly’ (font enabled only on the website for this user)
‘yes_adminonly’ (font enabled only on the admin for this user)

I’m sure you can create something on your frontend to update/change this user_meta key accordingly (if not check http://wordpress.stackexchange.com/questions/9775/how-to-edit-a-user-profile-on-the-front-end for details of changing user_meta data from the frontend).

(I suppose for your frontend only usage the ‘yes_adminonly’ setting won’t be very useful and I would just use the first two values for enabling/disabling the plugin for users.)

I did not know that particular plugin, but I have installed and tested it.
If you create a blank page on your site, say ‘profile’ and insert the shortcode [PROFILE_FORM] on that page, users can change the font settings (and certain other rudimentary profile settings, which, if wanted, you apparently can hide using this trick from the Frontend Edit Profile support forums: https://ww.wp.xz.cn/support/topic/plugin-frontend-edit-profile-how-to-remove-unwanted-profiel-fields?replies=3 ).

For more details on the FEP plugin you should check their support forum.

You’re welcome. Thanks for your suggestion, noted on the to do list 🙂