What you can do... Is... This used to be my workaround. when paypalch did not work. Just keep in mind doing this costs you more than with paypalch, but considering you are planning to make a payment to this project you can afford it
Create an account on coinbase
Create a wallet
Buy any kind of crypto
This can be Bitcoin,Litecoin, Ethereum, Tether,BNB etc. I prefer always litecoin because the value of LC changes every hour due to the financial markets, BTC is still a walking variable disaster, Because it is so high your value has higher chance of getting it to be lower than higher ) But considering your payment to crypto is only temporarily this should not affect your plan of getting ecoins.
Make sure to buy enough Crypto that values at 10eur so you can transfer it into Ecoins(minimum is 500ecoins, this should be a tenner)
Also make sure you create yourself a bit of a buffer. So if you want to buy 1000 ecoins, you, buy 20-25 euro worth of Crypto. (cuz of tax, there is a higher tax on crypto-trade than paypalch)
This process takes longer than Paypalch, so give it 15-30minutes before coins are added to your account.
Also you can add exisiting wallets to your coinbase account, so if you got a crypto wallet you can add it there.
Hope i did not violate any commerical TOS rule on this. But this is my workaround and always worked. Hope it helps.