1) Since transition to YAML format as default format links on the integration page are no longer valid for file download.
https://www.zabbix.com/de/integrations/msteams
links to
https://git.zabbix.com/projects/ZBX/repos/zabbix/browse/templates/media/msteams/media_ms_teams.xml

Validate other webhooks as well.
2)
Template_app_iis_agent.yaml: description: 'The service (http/https/etc) for port check. See "net.tcp.service" documentation page for more information: https://www.zabbix.com/documentation/current/ru/manual/config/items/itemtypes/simple_checks'
template_app_iis_agent_active.yaml: description: 'The service (http/https/etc) for port check. See "net.tcp.service" documentation page for more information: https://www.zabbix.com/documentation/current/ru/manual/config/items/itemtypes/simple_checks'

Have incorrect links, should be replaced with english links.

3)
Templates contain link to non versioned manual (current/manual), must be replaced with correct versioned links.