Internally moved teams 1 month ago but got another internal offer to a higher position?

Hi, back in Feb I applied for twointernal EOIs, and the first one immediately got back to me and liked me so I said yes and moved to that team. Now once I started in that team, the second eoi got back to me (they knew I had already agreed to move to the first eoi team) and were still keen on me. I had a chat with the team lead and director and yeah they want me to join their team.

This second team is a much better fit role wise for me, and an APS5 arp position so it also means more money but I feel super awkward and stressed about this situation and idk what to do? I feel bad for current manager seeing as I've only been in the team for a bit over a month but at the same time they're kinda lied a bit and said there would be opportunities to mvoe to an APS5 position down the line which my coworker said is a lie.