Not synchronize with Lotw

[G3WPF]

I have a similar problem. I upload each month to LOTW. It has worked fine until the last one yesterday. SWL creates one log file of my current QTH but no longer is there the file LOTWQSOs or LOTWQSLs. I noticed that when I press the start sync button SWL works OK up to "upload to LOTW" but then skips the steps "import LOTW QSOs" and "wait for upload completion" and goes straight to "update status" and gives the message that there were no errors. Today I updated TQSLto 2.3.1 but the same result. I do not receive the message about Bad Request.

Any ideas?