Same question, there's a lot of choices that you can use as a bitcoin wallet, why would you end up using them? Btw, there's no particular answer for those questions of yours with their FAQ so I'm guessing that you still have a chance.
Because I cannot sign into the account stops me from contacting the Support. I used my other wallet to write to the Support but there was no reply from them.
How about contacting them with their email? I guess that their ticket support on their website is different from directly emailing them.
support@bitcoinwallet.com
I think OP had contacted them, and I believe it will only be in vain contacting these people because their support does not answer the majority of the inquiries.
This is a scam
This is a scam. They do not answer legitimate emails. You can not change 2fa for mobile number and if you loose access to your email account, your btc is gone. Also very large fees. STAY AWAY
I hope OP had learned his lesson in this case. Do research or ask around the forum if we are new to cryptocurrency especially in application or wallet to use in storing our valuable BTC or other cryptocurrencies.