In attachments are pictures of VLANs and IPs, and as it looks in Packet tracer. Also
PC in VLAN 10 (10.10.1.10), connected to upper left SW2 can ping the gateway (10.10.1.1) and also gateways in other VLANS (so IP 10.1.1.1 and 10.20.1.1, both are on central MSW1 switch). Same with two other PCs: Can ping all gateways (10.1.1.1, 10.10.1.1, 10.20.1.1). As they can all ping all gateways it is not a PCs issue, default gateway obviously works!
Central Switch MSW1 can ping anything - all PCs and Switches - so also connection between switches work!
What can be wrong? I suspect the CPT. All configs are so simple.