First, make sure that you’re using Contact Form 7 version 4.2.2. If you are I recommend asking at https://www.ads-software.com/support/plugin/contact-form-7#postform so the plugin’s developers and support community can help you with this.
Next, Advanced Excerpt claims to be only compatible up to WordPress 4.0.7, so I recommend asking at https://www.ads-software.com/support/plugin/advanced-excerpt#postform so the plugin’s developers and support community can help you with this.
Finally, as Bold is a commercial theme, we ask that you please go to their official support channel. In order to be good stewards of the WordPress community, and encourage innovation and progress, we feel it’s important to direct people to those official locations.
https://www.elegantthemes.com/contact.html
Forum volunteers are also not given access to commercial products, so they would not know why your commercial theme is not working properly. This is one other reason why volunteers forward you to the commercial product’s vendors. The vendors are responsible for supporting their commercial product.