Puzzle tour in Letmathe - Hildegard's objects

Grandma Hildegard has lost all her belongings in Letmathe. However, the woman is no longer so good on her feet and can't remember which things have gone missing.

Can you find Grandma's (virtual) belongings in Letmathe? Chat with Hildegard via Telegram. She will be in contact with you throughout the tour and help you.

Solve the puzzle to find out which items Grandma left behind. Choose the order of the puzzle locations yourself. Will you manage to return all of Grandma Hildegard's belongings? Can you solve all the puzzles?

The puzzle tours are a kind of modern scavenger hunt in which the puzzle friends are sent puzzles and clues for each puzzle tour via a chat bot.
These are to be solved with the help of the environment.
If the correct solution is sent to the chat bot, the puzzle tour continues. As soon as help is required, "Help" can be written to the chat bot and additional hints are provided.

The booking is made via the website.
After the purchase, an e-mail with all further information (starting point, access to the chat bot and transaction code) is received.
The code is used to activate the puzzle tour.
The chat bot can be contacted via the messenger service Telegram.
The puzzle tour can be started at any time and can be carried out indefinitely, i.e. without time pressure. This means that the puzzle tour is not tied to opening hours.