@Lichtsignaal ,below is the blynk.log file you requested
12:23:58.739 INFO - Using data dir '/home/develop/Blynk'
12:23:58.963 INFO - Initializing mail transport. Username : example@gmail.com. SMTP host : smtp.gmail.com:587
12:23:59.685 INFO - Plain tcp/ip hardware server port 8442.
12:23:59.688 INFO - Enabling SSL for hardware.
12:23:59.691 WARN - ATTENTION. Certificate /home/develop and key /home/develop paths not valid. Using embedded certs. This is not secure. Please replace it with your own certs.
12:24:00.696 INFO - SSL hardware port 8441.
12:24:00.760 INFO - Enabling HTTPS for admin UI.
12:24:00.760 WARN - ATTENTION. Certificate /home/develop and key /home/develop paths not valid. Using embedded certs. This is not secure. Please replace it with your own certs.
12:24:00.971 INFO - HTTPS admin UI port 7443.
12:24:00.985 INFO - Enabling SSL for application.
12:24:00.986 WARN - ATTENTION. Server certificate paths cert : '/home/develop', key : '/home/develop' - not valid. Using embedded server certs and one way ssl. This is not secure. Please replace it with your own certs.
12:24:01.166 INFO - Application server port 8443.
12:24:01.183 INFO - Enabling HTTP for app.
12:24:01.183 INFO - HTTP for app port 8080.
Also, It seems that when I try an IP that is incorrect, it quickly responds server failed, but when I attempt to connect to the real IP it takes 10-15 seconds.