I am getting exactly the same errors since installing WPS Hide Login. Have you had any luck fixing the issue?
Thanks for your reply Champ.
It turns out it was the Media Deduper Pro plugin which was conflicting with Ultimate Members. Once i removed that plugin the problem was resolved.
Thank you for your reply @shahkarkhan02. I have just checked using the ‘Detect Cache’ plugin and there is not caching plugin installed on my site. Any other ideas? I am totally stumped!