Sitemap shows 404

Hi,

ive created the sitemap but receive a 404. Ive checked the help desk and could find a post with the "cookie bar" problem of web342.

Im suing "Cookies Pro" from pixelpro.

Here my active system plugins:


System - Angemeldet bleiben system remember Public 428
System - Sitzungsdaten bereinigen system sessiongc Public 480
System - Datenschutz Zustimmung system privacyconsent Public 485
System - Novarain Framework system nrframework Public 10242
System - Protokollrotation system logrotation Public 486
System - Tassos.gr GeoIP Plugin system tgeoip Public 10366
System - Google Structured Data system gsd Public 10254
System - Dropeditor system dropeditor Public 10298
DJ-MegaMenu system plugin system djmegamenu Public 10335
System - Felder system fields Public 461
System - K2Filter system k2filter Public 10186
System - Joomla!-Aktualisierungsmitteilung system updatenotification Public 452
System - Mootools Enabler/Disabler system mootable Public 10144
System - Umleitung system redirect Public 427
System - K2 system k2 Public 10012
System - P3P-Richtlinien system p3p Public 423
System - Abmelden system logout Public 430
System - Debug system debug Public 425
System - Benutzerprotokollierung system log Public 426
System - SEF system sef Public 429
System - Highlight system highlight Public 440
Cookies Pro system Cookies_Pro Public 10406
System - JCH Optimize Pro system jch_optimize Public 10410
System - Route 66 system route66 Public 10418
System - Route 66 Google PageSpeed

Regards

Edit:
PHP-Version 7.3.17-nmm1
Webserver Apache
PHP-Interface für den Webserver fpm-fcgi
Joomla!-Version Joomla! 3.9.19 Stable [ Amani ] 2-June-2020 15:00 GMT

yes, ive deactivated it and cleared cache. still 404.
The System Route 66 plugins are on last position like recommended.


Could there be another issue? Or should i buy the pro version (i need it anyway because of K2) and send you a admin login?