Membership communication using website

I have noticed a couple of lasting issues working with our club membership lists and using the email tool built into the website. Perhaps you can point me to what I am doing wrong.

We have a small club with 68 members that have joined. When I have attempted to export the CSV I have been getting this error:

When I click on this link to email the members

The email does not go out. It disappears.

The system is Windows 10 pro. Chrome browser.