I can't change event dates

Hi,

I am testing out this plugin and I am having a problem getting it to accept my dates or make changes to them.

The first event I save date is 1/10/2013 but somehow it came out as sometime in 1970 and the only dates to choose from were from 1960 to 1980.

I tried entering another test post but it would not save it. However It is showing so I guess from auto save.

The events I have are repeating but have slightly different details each month. For instance we have book club that meets the first Thursday of every month except January when it is the 2nd Thursday and the topic is different each month. Should this be recurring or just set up multiple dates or do I have to enter separately each month in order to change the discussion details?

I do not have very many plugins installed on this site. Is there a problem with yoast SEO ?

Thanks for your help