@Rath en the other helpers,

It succeeded.
Thank you all for your help.

greeting William

@Rath
When i install the new version then only opens the old version. What is the next step
Thank you for your answer

Hello,
I'm new here.
I have a walet Electrum ver. 3.0.2
I download Electrum 3.3.8.1
How can i get my bitcoins from the old version to the new ?
I also bought yesterday bitcoins. The were send to the adres of the 3.0.2 version, but the didn't arrive.

Thank you for your help.