It worked - but maybe there are a bug connected to the bridge.
After the transfer from my polkadot account to my ThreeFold Connect App i had trouble finding nodes in playground.grid.tf and ended up sending my TFT to another polkadot account.
I transfer around 100 TFT to my Polkadot account from my ThreeFold Connect App.
Found a node and deployed a VM. And later on deleted the contract. Everything is fine:-)
I use the Bridge option on the website dashboard.Grid.Tf - i enter my Stella address from my ThreeFold Connect App and send 4 TFT.
The TFT gets to my ThreeFold Connect App. Everything is fine:-)
I go to Play.grid.tf and use my polkadot account again (TFChain) as my profiler manager.
I search for nodes to deploy to, but the nodes are now offline. Everything is not fine:-(
To fix this temperary i send my 94 TFT to another polkadot account using the transfer option on the website dashboard.grid.tf.
The other polkadot account works fine on the web page Play.grid.tf and I can find nodes and deploy. Everything is fine:-)
So maybe there are some kind of bug or setting that is affected on my polkadot account when using the bridge that limit my account to find online nodes to deploy on.
Any way i can create a new polkadot account if i need to use the bridge again or maybe it was one off experience:-)
I think the problem might have been with the playground itself, and not the account per se. I think there were some changes being applied to the playground at that moment. Other farmers/users also shared some feedback regarding similar behaviour. Good to know it works now.