tranxchk.services (@) g ma!l. save my day and funds

i can't trade on my plus500 account. I cant buy, sell or withdraw my money. I have tried everyday to get help and have several open tickets, no correspondence from plus500. It keeps giving me an invalid user error. I can deposit money into my account and have lost several thousands already. Customer support is the worst. had to reach out to another service. plus500 needs to be question by the authority.