The harmonise function is not working.

Hello, my name is Alex.
I would like to report that the harmonise function is not working properly.
After I click on the harmonise button, the process starts, but it is interrupted and a yellow box pops up with the message ‘There was a problem and your request could not be completed. Please try again later.’
I have been trying to use this function for several days, but it has not worked once. What could be the problem and how can I solve it?
This is a very useful function that will save many hours of work, and I would be very grateful if you could help me.
Thank you in advance.
Best regards,
Alex
