Cannot update EasySocial!! - neither via Network nor via Directory

Hi,
Users are complaining because my site is not working properly -- most likely because I'm not yet updated to EasySocial 1.4.1. I just renewed my EasySocial license. After that, the automatic "Update via Network" does NOT work - it "successfully" goes through the update process, and then I'm left with the old ES version (1.3 something).

One time, I got a message that said I needed to download the new launcher from the EasySocial site. So, I did that - I downloaded the 1.4.1 zip file. Please note - I'm NOT a web developer, so I don't know tech stuff! The most I know what to do with that zip file is go to Extensions > Manage > Upload Package File. Then I "choose file" and choose the 1.4.1 zip file, and then press "Upload & Install." This used to work for me in the past. This time I got the following screenshot error (see attachment).

Please help me! I pay every 6 months for EasySocial, but I'm not a web developer, so please explain to me step by step how to fix this issue!
Best,
Kelly