Pictures Not Showing

are you using placeholder #_EVENTIMAGE{100,100} at Events > Settings > Formatting > Events > Default event list format ?

https://wp-events-plugin.com/documentation/placeholders/

Is it possible to put the link behind the event image?

try

<a href="#_EVENTURL"> #_EVENTIMAGE{100,100} </a>

it works, cheers

glad it worked.