As people reports it's still possible to withdraw cryptoassets from your account at Crex24 (as of August 2, 2022):
To do this, just write the letter to e-mail {support@crex24.com} with your account name and description of the situation and they'll provide you with a temporary login link actual for 7 days - quite enough time to withdraw all your assets.
Here the example of the Crex24 reply with a temporary link for withdrawals:
From:
support@crex24.comTo: (you)
Hello.
Thank you for reaching out. Unfortunately our exchange can't provide its services to residents / users from your country.
To get temporary access to your account, please use this personal link:
https://crex24.com/?tkn=xxxxxxxxPlease withdraw funds from your account as soon as possible. Note that this link is valid for only 1 week. After this period, you will not be able to log into your account. We strongly recommend that you do not ignore this fact and do not postpone the withdrawal until the last day.
Your browser must support cookies, otherwise, this link will not work correctly.
We are deeply sorry for the inconvenience.