Just purchased my first lot of XRB & I cannot work out, for the life of me, how to 'accept' it into my wallet.

I sent the 20,000 XRB from BitGrail to my rai_wallet v8.0 (Windows) currently on block 4437128

This is the transaction
https://raiblocks.net/block/index.php?h=F1882F82C0C9B01B302240A2220FF2F1AED27DFD4111EC3F306EE32B5098294A

I can see the 20729 XRB in the wallet as "Pending"

Now... How the fuck to I get it accepted

I watched this video which said hit the "Refresh Wallet" button. Didn't work for me.
https://www.youtube.com/watch?v=bXAb4ZVycCE

I also tried the "Search for receivables" button, which does nothing.

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edited to add:

Finally closing & reopening the wallet caused the amount to show in my balance.

Seriously... after 4 years of using these wallets, this is in the top worst 3 along with VPN & ANT.

There is a shitload of work to do to make this user friendly, so looks like a very long term hold.