Thank you very much for your response.
I funded the channel with 300k satoshis and I spent 203k satoshis, I think my "bottle" should be enough empty to create a payment request, but the wallet keeps saying that "my peer is not ready"

Try using
Lightning Network Community Jar. If you will be able to receive without any problems then you should contact someone from Lightning Spin (this might be a bit difficult). If it still doesn't work then there must be a problem with this wallet. It has barely 1 thousand downloads so I don't expect that many people have tested it properly.