Compatibility issues with LiteSpeed ??and no support

After reporting the compatibility problem with LiteSpeed ??Cache (Lazyload and Placeholder on the images) in the forum and receiving no response, I contact WebinarPress support email directly.

I create a test environment for them with only LiteSpeed ??and WebinarPress, and I generate explanatory videos for them to replicate the error.

But the support claims that they cannot replicate the problem, they only carry out erroneous tests without following the explanatory video that I sent them. Saying that the error is only mine, something totally false, since I generated various test environments in multiple hosting and it happens in all of them.

They just tell me that the free plugin has NOT support, and that I have to buy the PRO version so they can see the problem and replicate it.