It is better to wait at the moment as he might be unavailable or not able to check your messages.Well I think you should wait for another 24 hours and keep a check on last active of his temporary account and then take necessary action.
The first thing is did you got signed message from the account , if it is their then you can do that you just send him the pm and give him the 12 hrs time to clear the loan if not you are going to sell that account to clear your debts , even if he is not responding you can go through the process. Here you can give the details of the account and the signed message which he gave you on taking loan,
Even if he got the signed message. Whats the use ?? Address is barely 1-3 day old.
Provided Address from which he asked loan was a
Rollin.io Address (
164DH2uWvrdvRs4cFpjGC8ffo46t1f4zmW)
Check here:
https://www.walletexplorer.com/wallet/Rollin.io?from_address=164DH2uWvrdvRs4cFpjGC8ffo46t1f4zmWSo i think that he took the loan for gambling purpose. Am futher checking some more details and will let you know.