I have the following problem:

Uploading works in principle.
When uploading, the log looks correct, but on the roster main page, data is not actualized in time.

For example:
I renewed all game data and uploaded my data yesterday with no errors in upload log.
The last uploaded text of my char is still the date of my last upload.

Next morning (no update done meanwhile) the data is actual.

So there seems to be a delay.

If I update the guild, new chars are inserted directly, but my char data keeps old till a long time later.

My guild members have same behaviour.
My browser does not cache anything as far as I know.

I hope someone can help me out with that

Greets

Hmm, not sure
Perhaps CP/GP isn't getting the correct time from WoW

Back up your CP.lua files and compare the times from each save in WoW