Comes immediately message with password and message with confirmation

Dear author good afternoon. Explain to me please. I installed your plugin and decided to test it. On the registration page https://clean-trade.ru/my-account/ I enter an e-mail, and I immediately receive two letters, one letter with a request to confirm my e – mail, and the second letter from wordpress with a login and password. I thought that according to the idea of your plugin from the beginning comes a letter with confirmation verification and only after that the client receives a letter with his login and password.

Another problem is that the text of the letter that should activate the account comes here in this form

D?D′??D°D2????D2??D1??Dμ kamyshnikova_t, D?D?D°??D?D±D?, ????D? D???D???D?DμD′D?D?D?D?D????? Do D?D°D?.

D?D?D?D°D???D1????D°, D?D?D′??D2Dμ??D′D???Dμ ??D2D?D1 D°DoDoD°??D???, D?Dμ??DμD1D′?? D?D? ??????D?DoDμ D?D?D?Dμ
D?Do??D?D2D???D?D2D°???? ????Dμ??D????? D·D°D?D?????

CLEAN-TRADE – D???D???Dμ????D?D?D?D°D???D?D°?? ??D?D?D??? D′D??? D???D°??Dμ??D?????, DoD?D?D?D?D?D3D°, D?D???DμD2D?D1 D???D?D?????D?DμD?D?D?????D?, D3????D·DμD·D°??D???D???Dμ ??Dμ??Dμ??DoD?, ??D±D???D???D???D1 D?D?D2DμD???D°???? TTS.