Can’t broadcast to blogs

Hello,
I am pretty new to this awesome plugin. I installed it and just wanted to try to publish a posting to two other blogs within my multisite. But after saving nothings happens and the two blogs appear as unchecked again in the sidebar.

I enabled the debug and then I get this message after publishing the article:

2023-02-20 12:38:26.5879 ThreeWP_Broadcast: Blog is switched. Not broadcasting.

Below the broadcast box I can see this info:

Debug info

• High enough role to link: yes
• Post supports custom fields: yes
• Post supports thumbnails: yes
• High enough role to broadcast custom fields: yes
• High enough role to broadcast taxonomies: yes
• Blogs available to user: 4

Plugins, die in save_post eingeh?ngt wurden:delete_get_calendar_cachetptn_save_meta_boxcmplz_save_hide_page_cookiebanner_optioncmplz_document::clear_shortcode_transientscmplz_document::save_metabox_datacmplz_document::register_document_title_for_translationstdc_on_save_postWPSEO_Post_Type_Sitemap_Provider::save_postWPAlchemy_MetaBox::_saveWPAlchemy_MetaBox::_saveWPAlchemy_MetaBox::_savetd_review::on_save_post_update_reviewtd_video_support::on_save_post_get_video_thumbtd_audio_support::on_save_post_get_audio_thumbthreewp_broadcast\ThreeWP_Broadcast::nopthreewp_broadcast\ThreeWP_Broadcast::save_postYoast\WP\SEO\Integrations\Watchers\Primary_Term_Watcher::save_primary_term

My PHP version is 8.1.2-1ubuntu2.10 and Broadcast version is: 49.05

Do you have any hint, what might be the reason?
First I thought in all blogs I need the same category but even then the problem seems to exist.

Thanks a lot.