That desktop program you are using is a very old and unfortunately outdated builder. We haven't been able to support it for years, and it uses software from Microsoft that is no longer supported by them. We highly recommend you do not continue to use this program. It would be more beneficial to your site to utilize our online version of this builder, Sitebuilder Plus. It would be even better if you were able to rebuild your site on our newer builder, Website Builder.
This newer program would give you a responsive design, mobile friendly site, and we are able to offer a free SSL through this builder. It also allows you to build a higher quality, modern looking website. It would not cost any additional money for you to use this builder, you would just need to create a new site and start to rebuild. Your old site will be up and running until you are ready to switch. We have so many helpful articles and Youtube tutorial videos to help with this transition.