Are you hosting your LearnDash site with SiteGround? If so, you might notice some issues with LearnDash features not working properly. This might be due to the use of the SG Optimizer plugin, which (I think) SiteGround automatically enables on all WordPress hosting accounts by default.
Although SiteGround has officially denied that there are any issues with the SG Optimizer & LearnDash, I have seen it enough that it’s worth writing about.
This post will explain the main features of SG Optimizer that seem to be causing issues, and how you can disable them to get LearnDash back to being fully operational.