The source of this problem is tumblr.
Obviously, they decided that my site was no longer acceptable and they set up specific rules so that tumbex users no longer have access to the contents of tumblr.
Because to be honest, their interface is really to be reviewed otherwise you would not be here.
It is therefore with great sadness that I announce that you are living the last moments of tumbex, it was a great adventure, and a big thank you to all those who have followed me during all this time! Using tumblr with an easy, clean and efficient interface was my goal.