I posted this on discord earlier: "@VaultMeX What are the upgrades which require "investigating" account balances? If it's a security thing why not require 2FA and email confirmations for withdrawals? That way people can confirm their own withdrawals like every other exchange and you don't have to deal with the backlash from so many people not having access to their funds."

I checked now and it has been deleted.

VaultMeX actually responded on Discord. Their message is: "Withdrawals are fine
if your withdrawals are not going through this means we are doing investigation on your accounts balances due to backend upgrades"

How "backend" upgrades relate to having to investigate accounts I'm not sure.

A few interesting things of note. When you try to look up the domain information for vaultmex.com they've activated whoisguard to hide the information. The registrar for the website is Namecheap and their site is hosted by Incapsula so those are two places they can be reported. The other is that I tried to make a lot of withdrawals yesterday which were pending approval for more than 16 hours. Only one went through. Then another small withdrawal I made today went through instantly, and after that none are going through again. Even if it were just their site being terrible the lack of response from the support team indicates that they don't care. The helpdesk gives no way to confirm that your ticket was submitted since the registration page doesn't allow you to create a password, and you need to log in to check ticket status.

Vaultmex has 5-7x the withdrawal fee of any other exchange. On top of that Dodosenpai-VMX on Discord suggested that a user try withdrawing a smaller amount of coin. That seems like their way of forcing you to make more withdrawals and thus pay them more in fees. Any exchange which takes control of your coins away from you is shady and untrustworthy in my opinion.