plugin caused wordpress dashboard and website crashed

Hi there,

Thanks for reaching out to us. Sorry for the inconvenience.

We have released a new version today.
1. Please update your free version to 2.0.12
2. Please update your pro version to 2.0.12

You can try this way – https://getwooplugins.com/documentation/woocommerce-variation-swatches/#installation-premium

Or,

You can upload your pro version by FTP/Cpanel/Server.

Hopefully, the issue will be fixed.