Actually, you need to specify exactly which map you are playing. Because "Where the Beauty" is an improved version of "Eternal Love". Here is a quote from the attached description:
There you can use heroes of level 868, 6424 levels, and so on. Most likely, this version is more difficult than the original.
update: I tried using the save editor to restore the level, but there is a limit of 99. What a problem.
