This may help for your photo upload issue:
http://docs.ultimatemember.com/article/114-photo-uploads-not-working
For what it is worth, I use Slider Revolution with UM and have no conflict. Both problems may be related to your theme. You may need to try a different theme or hire a developer to customize it to fix conflicts with UM.
Thank you for replying,
The UM photo uploading has cropping function and most of date pickers are using jQuery, so I guess the conflict’s reason is about jQuery maybe?