Hi @funktronic,
Welcome to the forums! Without seeing the Gerber files, I can only make an educated guess of what the problem is.
I believe there is a mismatch between drill file and gerber file formatting. It would appear the drill files are off by an order of magnitude. (aka - a decimal place needs to be shifted by one)
This can be corrected during the Gerber generation. In the CAM processor for Eagle 8.7 set your Drill formating as follows:
And then set your Gerber formatting as follows:
Alternatively - you can use our CAM file found here. I recommend using our CAM file because it will give the Gerbers the proper extensions the software is expecting.
i.e - Top Copper = *.GTL, Solder Paste = *.GTP, Drill File = *.TXT, etc.
Can you give it a try and let us know if it worked?