The humidity in this bag is too high. You need to open it regularly and wipe up the condensation.
If you want to avoid this, you can seal your scions by wrapping them with parafilm or covering them with grafting wax instead. Aditionally, you can also wrap the scions with aluminium foil to protect them from strong sun during the time they heal.
Be aware that this bag heats up like a mini greenhouse and potentially cooks your scions.
Unfortunately, you cannot do much, if any, trading of scion wood across the Atlantic. Both the US and EU have laws preventing the transfer of plant material in order to cut down on the spread of disease and pests. I believe that it is much easier to trade stuff within the EU.
What do you have in mind? Most varieties in the US originated from other countries, and a big portion was from Europe. You can trade with any EU member. Are you looking for anything specific?
If you go to ourfigs you can meet other growers in Portugal. Which has some of the best figs ever! Look for Violeta, Paraíso., Figo Rei, Preto de Torres Novas and Moscatel Preto
All Portuguese figs that are excellent. Many others are great too!
There are at least 2 users that have most of the known figs that live in Portugal Also many stone fruits from here.
You can find them on Ourfigs.com. One guy you want to know goes by the handle Jsacadura.
He has an amazing collection of figs and stone fruit. I heard he did have some family issues, so not sure how active he is now? I have not heard from him in a long time.
If you do find him please say hello from drew51 on growingfruit.org. Others here know him too. You heard of Google translate right? Don’t care for figs!? What! My mom would say
Ludzie nie mają sensu! She was Polish.