Website not working after update

On the first install this theme worked great.
With the recent update, however, the boldial assets plug-in stopped working and whenever I activated the boldial-child theme wordpress loads a blank white screen.

After uninstalling everything associated with the them, turning off all plug-ins, and trying a dozen or so re-installs of boldial, I thought it was time to contact support. Since the update, I haven’t been able to load the boldial.zip file through the wordpress install interface. The boldial-child.zip will install, but whenever I go to install the boldial.zip or the boldial assets plugin, I receive the following error:

The package could not be installed. PCLZIP_ERR_BAD_FORMAT (-10) : Invalid archive structure

I read in other posts, that it may work if you just manually upload the directory unzipped in “wp-content\themes” folder via ftp. So I tried that. This way worked once and I was able to activate the theme, but as soon as I went to install the boldial assets plug-in I would get the ‘invalid archive’ error again. Now, however, once I get the theme uploaded, I can’t even get the the theme to activate.

I’m in no way a WP pro, but I’ve been using it for years, and never had a problem.

Please if there’s any advice on how to get to solve this, please help.

Thanks!