how can I change my date of beginning my period?
You need to calcel your subscription writing e-mail to the Moderator. Money will be returned to your balance and you will be able to buy a new subscription. Or, just write the Moderator and ask him manually change the dates of your subscription.
and how to change to "dual login" ?
Read FAQ, you are not the first day on the forum, i hope
okay I saw it inside FAQ but one question is not answered inside FAQ: is it possible: one day I use receiver 1 and other day I use receiver 2. (other receiver mgcamd switched off) ?
If you have dual-tuner receiver, this receiver can be used permanently any time you like. It does not mean that with dual-login, you will use receiver 1 today, receiver 2 tomorrow (or other time). Both tuners within one receiver are used simultaneously. as a rule, tuner 1 - for watching TV, tuner 2 - for recording some other TV channel.
If you mean 2 stand alone receivers - they cannot be used simultaneously. Only 1 receiver with dual-tuner.
I mean 2 stand alone receivers - (one receiver room A, one receiver room B)
they cannot be used simultaneously? That is easy to understand but can it be used separated in time?
Yes, you can use them separately if you UNPLUG one of the receivers (not only from the network, but leave it without power).
If you forget to do that, you know the consequences.
is there one warning when it happens one time?
Warning is always sent by the server to your e-mail address with notification on the ban.
https://www.cardsharing.cc/index.php?topic=28219.0
for a second receiver: do I need a second username-password-account. Or do I have to buy a second time with my old username?
Yes, you will need one more (single) username and password if you want to use both receivers at the same time.
thank you!