The plugin does not seem to act if there are prices on sale

I have been using this plugin for several years now, in several installations, and today is the first time that I see a failure or malfunction.

I have 1 type of user with a different price from the normal client. When I put offers, the plugin seems not to work. All users see the price with the offer, including the user who would have to have a different price.

This only happens when there are offers.

I hope I have explained myself clearly, thanks for the support.