Get those plugin up-to-date
Firstly, make sure you are using the latest version of plugins from this site. You can get the latest version of the plugin by activating your license from the plugin settings or you can download the plugin by logging into SuitePlugins, going to My Purchases and clicking the plugin file. Once, you have done this, you can upgrade to Ultimate Member 2.0+ as per their instructions.
What plugins are 2.0 ready?
Now, what if you upgraded to Ultimate Member 2.0 and your site breaks? If you have not updated your plugins as mentioned before then simply deactivate the plugins or rollback to working state and update those plugins.
Still having issues? Ok, no worries. Contact me through the form below and I will work to get your site compatible and running again.