If "official" web suggest a wallet on subdomain on junk TLD, than you know it's scam or in this case luring out Private keys and seed - it's phishing.
Please learn what is:
domain name & TLD (.icu - junk nTLD)
subdomain (subdomain pretending to TLD to be .com)
whois (root4.icu is registered with Namecheap which has Bitcoin payments holder owner identity)
whoisguard (root4.icu is behind WHOISGUARD - hidding registrar identity)
nameservers (root4.icu is hosted at Hostwinds webhosting which has Bitcoin payments - once again hidding owners identity).
I feel you will be victim of many phishing attempts. Bet you send you send your e-mail login/pass to any "e-mail from administrator" asking for your login credentials.