Hey @DACO_Wael - FINALLY we found the solution! 
Seems that your old domain provider has forgotten to remove the DNSSEC when you transferred the domain. This caused these strange troubles we all faced during the last weeks. We just checked with ICANN and triggered the removal, so in the next (hopefully) 24 hours everything should work as smoothly as possible!
Send you a mail with the old settings and the link where to check for yourself for the future.
