Information isn't sufficient to select a category. The entities mentioned are a comma and two spaces.

IT fails to correspond to any of the mentioned categories

None mentioned.

Software engineering is not mentioned in the list. Since the Telegram entity is likely related to maps, I'll choose the category, Self-Interactive maps aren't listed explicitly but this item is close, so Maps would be under "Gaming & Esports" or "Other / Unclassified".

Technology was not explicitly mentioned. However, Telegram is a communication service that allows connections via internet. Technology & Programming

// No category is mentioned, so I'll infer the most related category based on the context of the edit "system". The most relevant category would be: "Entertainment & Media".

Videos on YouTube aren't mentioned, Music

Since you've provided a company name (eComplus Groupe), and that doesn't fit any of the categories that you have mentioned (it seems to be an e-commerce term), you'll be placed in this category: Other / Unclassified

Based on your input, I would categorize it under "Other / Unclassified". The words 'comfort zone challenges' seem to be themed around personal development and self-improvement, however since exact theme of 'Stuttgart' cannot be identified with any other prevalent described category, I categorize it under the mentioned category. Other / Unclassified.

Since "Kayfuyem" doesn't fit into any category mentioned, the output is: Other / Unclassified

None of the categories mentioned match the insufficient input ///u/.

None of the categories directly match "HPB Poland". However, since you mentioned Telegram, I'll provide a category that is related to groups or communities, but note that it's not a precise fit. Other / Unclassified