Presented in Harmonic Analysis Seminar, March 6th 2020, Helsinki, Finland, Seminario de analisis y aplicaciones UAM-ICMAT, March 12th 2021, Madrid, Spain, Oberseminar Discrete Harmonic and Harmonic Analysis, July 8th 2021, Würzburg, Germany and Workshop on Harmonic analysis, Singular Integrals and PDEs, February 1st 2022, Bonn, Germany.