Hey @michael74 and @acbrent25!
Thank you for using QSM! On the Questions tab, do you see the create new page button and text or is the entire tab empty?
The 500 error listed suggests an error from the REST API. Would you be able to perform a plugin conflict check? This process will check to see if there is a plugin that you have installed that may not be compatible with the plugin that you are trying to use. To do this, first, de-activate all other plugins besides Quiz And Survey Master. Now, check to see if it is working correctly.
If this fixed the problem, this suggests that it is a plugin conflict issue. To discover which plugin may contain the conflict, activate one plugin and then check if the plugin you are setting up still works. If it no longer works again, the plugin you just re-activate is the plugin conflict. If not, continue to activate the plugins one by one and check to see if the problem arises again.
If you do find a plugin conflict, please let me know which plugin and which version of the plugin that you are using.