There is no limit for number of images to load. Please give the details.
What is image format and what goes wrong when you are trying to load more images.
I solved it yesterday
the problem was format of image, for some reasons Capmonster file saved format is png
When I encode base64 it, its format is bmp
Load multiple images after that MCS showed nothing
MCS only accepts png, jpg
Although the fact is that but 400 in 600 images were loaded successfully and most of them were not recognizable with anti-captcha service due to anti-captcha doesnt accept bmp format type
Solution was use others tool to convert from bmp to png
when I load captcha with bmp format although it does not accept multiple files but there was not a single error message box or any logs
Suggestions:
+ please put supported image file for each captcha service
+ add log file when catches exception like Capmonster