We present MeerKAT H i observations of six jellyfish candidate galaxies (JFCGs) in the galaxy cluster, A2626. Two of the six galaxies JW100 and JW103, that were identified as JFCGs from B-band images, are confirmed as jellyfish galaxies (JFGs). Both of the JFGs have low H i content, reside in the cluster core, and move at very high velocities (∼ 3σcl). The other JFCGs, identified as non-jellyfish galaxies, are H i rich, with H i morphologies revealing warps, asymmetries, and possible tidal interactions. Both the A2626 JFGs and three other confirmed JFGs from the GASP sample show that these galaxies are H i stripped but not yet quenched. We detect H i, Hα, and CO(2-1) tails of similar extent (∼ 50 kpc) in JW100. Comparing the multi-phase velocity channels, we do not detect any H i or CO(2-1) emission in the northern section of the tail where Hα emission is present, possibly due to prolonged interaction between the stripped gas and the ICM. We also observe an anti-correlation between H i and CO(2-1), which hints at an efficient conversion of H i to H2 in the southern part of the tail. We find that both RPS and H i-to-H2 conversion are significant depletion channels for atomic gas. H i-to-H2 conversion is more efficient in the disc than in the tail.