My friend
@PrincessCheetah uses MyVMK Experience and has gotten the same issues. Here's how she fixes it (with pictures!).
1. Log in on the starting screen
2. If you get a black screen but you hear the map music, click the Avatar button on the top of the window labeled “Login to VMK”.
3. Click the VMK button in the bottom left corner of the window that pops up
4. The MyVMK home page should show up with an error message. If the starting screen shows up, enter your login info wrong, this should also bring up the needed page.
5. Click the Home tab. Enter your login on the right side. You may not be able to see the text, just click the text box and type blind (but correct) and click where there should be a space for the “Enter” the kingdom button. Your mouse should recognize the hyperlink. You might need to be quick about clicking where the enter button should be, it sometimes disappears.
6. Another window should open titled “Wine Internet Explorer”. Enter your login info again in the welcome box then click “enter” the game image/hyperlink.
7. Another “Wine Internet Explorer” window should open with the MyVMK client window loading.
"This process isn’t perfect but I’ve found it to work for me."-PrincessCheetah