@Lele Welcome to the group, Moele.
Note that Sienci made the following announcement when gSender 1.4.0 was released:
" Technical Notes - 32 bit no longer supported
We are officially dropping support for 32bit versions of gSender. It was a hard decision but continuing to support 32bit was a security concern for several libraries we use and we can’t be shackled long term to out of date libraries without alternatives. Version 1.2.2 should continue to work fine for the small subset of users (sub 1%) that we show as using 32 bit operating systems."
You will find 1.2.2 for 32-bit windows here
Scroll down to 1.2.2 for windows 32