Thanks Cygnus Enthusiast! uncommenting "#define PRERE" did the trick! The moose disappeared! :D
After that I ran into more problems but after some time I solved it all :D
Even after the moose disappeared, when I logged in I was unable to move or chat; from what I've googled this either means there's something wrong with IP settings, or it's a packet_db problem. Since I couldn't get to the char select at all in the beginning, I thought I fixed the packet_db problem when I was able to login, but this was not the case. At first I thought it was IP related and I thought I had to change the local host IP "127.0.0.0" into the 192.168.x.y kind of IP and I found a smart post about editing "subnet_athena.conf" in which I specified a second subnet line besides the standard single line like this:
subnet: 255.255.255.0:192.168.1.2:192.168.1.2 subnet: 255.0.0.0:127.0.0.1:127.0.0.1
But that didn't make the difference; at least not immediately, I'm not sure if this contributed to the solution.
After that it still didn't work so I took a closer look at what the servers were saying when I logged in. One of the servers immediately said Disconnected x after I logged in, and another window said something about a packet error and "0x08c9" or something. I already tried 3 ragexe versions both with obfuscation commented and encryption disabled, and with obfuscation uncommented and encryption enabled, but those 6 setups didn't work. I then tried searching the packet_db.txt file for "0x08c9" and it turned out to be a unique match for packet version 34, so I googled the matching ragexe 2013-03-20 ragexe.exe and managed to download it from some site by rightclicking the hyperlink, copying link location(save file didn't download the file but saved the html of the current page) and opening the copied link in a new tab by pressing ctrl+tv. I then edited the 3 corresponding rathena files packet_db.txt, mmo.h, and core.h with the new packet version 34 and the matching date 20130320, rebuilt the solution, and finally edited the client side clientinfo.xml and I was able to walk and chat!!! :D
The only thing left for me to do now is to change the starting zone to the old starting zone which is a matter of replacing the starting zone map name with the old one instead of the renewal one. I'm so happy :D I've been working on this the past 3 weeks for about 3 days now and it has finally payed off !!! I still wonder why only version 34 worked for me...30 and 45 didn't work. Maybe it's because my client folder is kind of Frankenstein...It's based on a "Full_kRO_Renewal_20160124.exe" File; I forgot if I eventually used the folder generated by just double clicking and running the .exe file or if I used the folder generated by just unzipping it, maybe it makes no difference...either way, that client was 2.69GB but it had no data folder which I copied from another ragnarok folder on my computer, and I've copied other parts of it from other places so it's a kind of patchwerk.
Anyways! Thanks for the help! I couldn't have done it without you! And I hope that the information in this topic will help someone with a similar problem in the future