Domain mapping plugin locks me out of website

I have installed the plugin Domain Mapping and activated and followed the onscreen installation instructions. However, when I try to log back into my site, I receive the below address, which keeps me in a loop and prevents me from logging-in.

After disabling this plugin, I can then, log back-in. However, after I re-enable this plugin, it again, locks me out, with the same above address and stays in the loop.
How to fix this much needed. Thank you all in advance