Hi,
you and your group

1) added several strange tags to buildings:
construction:date:nb
construction_date.nb
construction_date:nb
building:architecture:
building:architecture:niveau

2) duplicated many addresses that now exist twice

3) the content of "building:architecture" is not according to the documented use of the tag

Please check these issues and please point the leader of this mapping activity to the "organized mapping guidelines" which may apply to this activity:
https://osmfoundation.org/wiki/Organised_Editing_Guidelines

That would be
fuel:taxfree_diesel=yes "Diesel fuel with few or no taxes, typically for agricultural, construction, or other off-road use. May be known by names such as agricultural diesel, off-road fuel, red diesel (from the dye used to mark it as untaxed), etc. "

Hi,
please check the plants you added recently. They all have 4 foreign tags that shouldn't appear in OSM.
It also seems the source of data is missing

Hi,
what does 'fuel:Marked_Gas_Oil' mean? This tag is not used in other places.

Hi,
could you check some of these roads? You added a 'parking_space:surface' tags, but there are no 'parking' tags.

Hi,
could you explain the meaning of 'soccer_side'? Is it the number of players per team?

'old_operator' ist eines der wenigen etablierten Tags mit 'old_' Präfix.
Generell würde ich "old:" oder "was:" auch bevorzugen, aber die sind hierbei wesentlich seltener (20000 vs 20 vs 2000).

"former:" ist extrem selten, und sollte wohl eher nicht verwendet werden.

Meistens wird nur das "opening_hours" Tag ausgewertet und alles mit einem Subkey ist nicht sichtbar. Jetzt stehen die wichtigsten Informationen direkt im Haupttag und sind damit für wesentlich mehr Anwender verfügbar.

Hi,
you added a strange tag here:
"fee:type\=federal_recreation_pass = yes"
What does that mean? You can only park if you own this pass?

Could you provide some images? I can't see anything in the instagram link above without an account.

A 'pole' or 'flag' doesn't have any implications on charging sockets or lighting (this are separated tags).
It might be better to use the common 'pole' and use sub-tags that specify the precise type.

I'd recommend to make a post in the community forums with some example images that clearly show the differences between the different types and ask for suggestions.

Hi,
could you check the fuel tag here? fuel:h35 or fuel:h70 would be common, h370 looks like a mistake.
node/13078595871

Hi,
could you check the turn lanes you added recently? Some got garbled tags like
"left|left;through|through = through|through;right"

Hi,
you added the tag "totem" here. Did you mean "pole"? pole=*

The cases of multiple descriptions you found are mostly the two local (or at least one used close by) languages, plus English as a global alternative.
The German translation seems a bit random - why not French or Spanish?

Sure, ancient words and rare languages might cause some trouble in automatic translation, but I guess as soon as we have a description in plain English, most problems should be solved.

Was not intended. Somehow Ctrl-Shift-Alt-U was recognized as Ctrl-Shift-U only, uploading all at once.

Hi,
"gap=yes" is a tag that is not used in other places. What does it mean?

I completely missed that, but fixed it now.

You can always search for things like this using overpass:
https://overpass-turbo.eu/s/2ane
and from there load it to your editor of choice.

Hi,
could you check the Wiki for the proper names of these bicycle charging sockets?
socket:*=*

Ja, das klingt gut.