A lot of resources have been dedicated, spent to making 0.4.9 and 1.0.0 usable. If you see any specific problems, you can bring it up in github or even do a pull request for a change. You can also point out the specific problem in here.
I tried to send some coins into your address using 0.4.9 wallet. No success.
Status: 0/unconfirmed
Date: 26.02.2021 08:36
To: test YL5kf54wPPXKsXd5T18xCaNkyUsS1DgY7z
Debit: -1.00 YAC
Net amount: -1.00 YAC
Transaction ID: a05776ef909c64aedea33c275989b8571057d4eceb6a7b4668208bc633a97ab1
Status: 0/unconfirmed, broadcast through 3 node(s)
Date: 08.03.2021 08:41
To: test YL5kf54wPPXKsXd5T18xCaNkyUsS1DgY7z
Debit: -5.00 YAC
Net amount: -5.00 YAC
Transaction ID: 3ee3753a0d489a3110a69011ad09bc699581be5f94f0336d84af45e4d8fd4133
Status: 0/unconfirmed, broadcast through 3 node(s)
Date: 08.03.2021 08:42
To: test YL5kf54wPPXKsXd5T18xCaNkyUsS1DgY7z
Debit: -5.00 YAC
Transaction fee: -0.001 YAC
Net amount: -5.001 YAC
Transaction ID: f1bcfa64f24152d7b8394a683759811387379822d8a1f943f7074a842c6bc7ba
Any idea?
Best