For sure it is organizer mess. Appendix 1 is available on "another" official noticeboard, which was working before sportity was started and was used as platform for entry list - https://www.dmsb-sport.de/25_Interna...er_Aushang.php
Procedures to be valid are very clear - any change in supplementary regulations or itinerary must be made by bulletin.
And in addition, in rules there is point 44.2.11 - Provided that it has been stated in the Supplementary Regulations of the rally or is indicated in a later bulletin, the organisers may authorise crews to check in before time without incurring any penalty.
For sure this was not stated in supplementary regulations or any bulletin for TC 10B...

